tag:blogger.com,1999:blog-85539985272758612472024-03-18T03:00:38.209+00:00Bird HybridsBird Hybridshttp://www.blogger.com/profile/12029864289171258900noreply@blogger.comBlogger255125tag:blogger.com,1999:blog-8553998527275861247.post-75670118851484368192017-05-08T16:38:00.000+01:002017-05-08T16:38:03.376+01:00White Ibis x Scarlet Ibis<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4MlCAzGLdWztA8fbzI6QwPxU-tUAXgYzJzRRl3QSseKGzv7DPO75G4eRUOBmo-VPlclcJ4ConQ8SBe93lvofdYybwVVrZXz6mGgpAKdwcgzKqyeuzdPHxxEmnHe-U66ouYlTtHF3IL8I/s1600/3202.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="234" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4MlCAzGLdWztA8fbzI6QwPxU-tUAXgYzJzRRl3QSseKGzv7DPO75G4eRUOBmo-VPlclcJ4ConQ8SBe93lvofdYybwVVrZXz6mGgpAKdwcgzKqyeuzdPHxxEmnHe-U66ouYlTtHF3IL8I/s320/3202.jpg" width="320" /></a></div>
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<span style="font-size: x-small;">White Ibis x Scarlet Ibis hybrid, Aruba Salina (Aruba, off Venezuela), 12th April 2017 - copyright Steve Mlodinow</span></div>
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<span style="font-size: x-small;">(photo ID: 3202)</span></div>
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Steve tells us that this hybrid isn't at all rare in some colonies in northern Venezuela and Columbia leading some to speculate that Scarlet and White Ibises are colour morphs of the same species. In an article in <a href="https://www.jstor.org/stable/1521240?seq=1#page_scan_tab_contents" target="_blank"><i>Colonial Waterbirds </i>10.1 111-114</a>, Cristina Ramo and Benjamin Busto document 40 mixed pairs and 14 mixed copulations in the Venezuelan Llanos and proposed that they should be treated as different subspecies of one species. But whether they are colour morphs, different subspecies or different species, most if not all of the main taxonomic authorities are still treating them as separate species at the moment.<br />
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It is reported that captive Scarlet Ibises receiving inadequate levels of β-keratin in their diet turn pink, and such birds may be difficult to distinguish from hybrids (see <a href="https://www.carolinabirdclub.org/chat/issues/1989/v53n4ibis.pdf" target="_blank"><i>The Chat </i>53: 90-91</a> for example). If anyone has any information on <i>how </i>they may be differentiated, please get in touch.<br />
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In Aruba neither species is common. Steve tells us that Scarlet Ibis has been nearly annual during the last 5 years, with 2-3 birds involved. This is the first hybrid. A White Ibis with an abnormally dark bill turned up the day after the hybrid - here they are together:<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBpYC56AXqutTI2vGLjiXGUNDtvkT09Yf-a4eMVDzZ0jxHb3WHfSFdtE2Lx3p-7xXkA4mORJTP0pWWo7qaZ2LIqiWNoMdu0y1U7bL5SuBJkp0znKiPU2sPoNYPCKa9_wZibWgBu9584HY/s1600/3203.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="188" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBpYC56AXqutTI2vGLjiXGUNDtvkT09Yf-a4eMVDzZ0jxHb3WHfSFdtE2Lx3p-7xXkA4mORJTP0pWWo7qaZ2LIqiWNoMdu0y1U7bL5SuBJkp0znKiPU2sPoNYPCKa9_wZibWgBu9584HY/s320/3203.jpg" width="320" /></a></div>
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<span style="font-size: x-small;">White Ibis x Scarlet Ibis hybrid (right, with White Ibis; same bird as in photo ID 3202 above), Aruba Salina (Aruba, off Venezuela), 14th April 2017 - copyright Steve Mlodinow</span></div>
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<span style="font-size: x-small;">(photo ID: 3203)</span></div>
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<span style="font-size: x-small;">White Ibis <i>Eudocimus albus</i></span><br />
<span style="font-size: x-small;">Scarlet Ibis <i>Eudocimus ruber</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-39509552865719855462017-05-08T16:37:00.001+01:002017-05-08T16:37:33.199+01:00Bufflehead x Hooded Merganser<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgE5FGlW8MteFQM0dkxo6BDChFdYu-RW-Oq6ldjQfdJpWR1X9L8NxNSrhzXdmmwoazejOcntbEN7lI5rMp3EFatx2OLvjpZnnftaGmrUDiRG98rQ5NLlgE268TMDeOBMWvukfBycjdiIEc/s1600/3218.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="161" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgE5FGlW8MteFQM0dkxo6BDChFdYu-RW-Oq6ldjQfdJpWR1X9L8NxNSrhzXdmmwoazejOcntbEN7lI5rMp3EFatx2OLvjpZnnftaGmrUDiRG98rQ5NLlgE268TMDeOBMWvukfBycjdiIEc/s320/3218.jpg" width="320" /></a></div>
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<span style="font-size: x-small;">Bufflehead x Hooded Merganser hybrid (right, with Bufflehead), Firestone Gravel Pits, Weld County (Colorado, USA), 2nd May 2017 - copyright <a href="https://www.flickr.com/photos/36088296@N08/" target="_blank">Steve Mlodinow</a></span></div>
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<span style="font-size: x-small;">(photo ID: 3218)</span></div>
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Steve notes that that there is a bit of a crest, which changes in shape over time as the bird assumes different attitudes. The white on the head is also oriented more towards rear than top. The bill and tail are longer than those of a Bufflehead, with the entire bird being a bit larger as well. <br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgNA4XCjUbuQppkpcZNrwNEMwiNrcFzPHA5qycSr2XevlmF3JWbsZhxIhyphenhyphenrkz8QIAY3ZXiCXPL7i48u-dB68cPl3-CD_ifZjkPvwxiWLac7gR9n9fKXdIn4atg3Quern1UwrTIL31O-D64/s1600/3219.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgNA4XCjUbuQppkpcZNrwNEMwiNrcFzPHA5qycSr2XevlmF3JWbsZhxIhyphenhyphenrkz8QIAY3ZXiCXPL7i48u-dB68cPl3-CD_ifZjkPvwxiWLac7gR9n9fKXdIn4atg3Quern1UwrTIL31O-D64/s320/3219.jpg" width="320" /></a></div>
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<span style="font-size: x-small;">Bufflehead x Hooded
Merganser hybrid (same bird as in photo ID 3218 above), Firestone Gravel Pits, Weld
County (Colorado, USA), 2nd May 2017 - copyright <a href="https://www.flickr.com/photos/36088296@N08/" target="_blank">Steve Mlodinow</a></span></div>
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<span style="font-size: x-small;">(photo ID: 3219)</span></div>
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<span style="font-size: x-small;">Bufflehead <i>Bucephala albeola</i></span><br />
<span style="font-size: x-small;">Hooded Merganser <i>Lophodytes cucullatus</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-75398176412934428952017-05-08T16:37:00.000+01:002017-05-08T16:37:02.869+01:00White-cheeked Pintail x Cape Teal<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEid65_1W6IALN-6yqAbrY07ogukSi-WCIvuV7M85LrwkqCuLUp0HYuOa57qqniqSpw1jJ1mKGxC6W9_4K0Z7p2-uqXksF4KPMRnHDjjMNAFYEyQt-YoL9RB1B9KifVsir40a9OjdVVB84A/s1600/3201.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEid65_1W6IALN-6yqAbrY07ogukSi-WCIvuV7M85LrwkqCuLUp0HYuOa57qqniqSpw1jJ1mKGxC6W9_4K0Z7p2-uqXksF4KPMRnHDjjMNAFYEyQt-YoL9RB1B9KifVsir40a9OjdVVB84A/s320/3201.jpg" width="320" /></a></div>
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<span style="font-size: x-small;"><span style="font-size: x-small;">White-cheeked Pintail x Cape Teal hybrid (with White-cheeked Pintail)</span>, JCB Lakes, Rocester (Staffordshire, UK), 11th April 2017 - copyright <a href="https://www.flickr.com/photos/135695609@N03/" target="_blank">Philip Ridsdale</a></span></div>
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<span style="font-size: x-small;">(photo ID: 3201)</span></div>
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The White-cheeked Pintail influence in this bird is fairly obvious but for me the other parent wasn't so clear. Thanks to Joern for pointing us to the correct ID.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZ3i1zoH9RRSO35crsze1jRSW4NKfrsIGiIJkeddUkC-3EoexuOhL71zb951xdzKi1BeJKBx6QNF7BX3yHzWVd7u2aPFZTc-GcT0xF0fJSIZOBkAMcVXq9Nwg0jeWFtpO4tebYdEAgF4c/s1600/3200.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZ3i1zoH9RRSO35crsze1jRSW4NKfrsIGiIJkeddUkC-3EoexuOhL71zb951xdzKi1BeJKBx6QNF7BX3yHzWVd7u2aPFZTc-GcT0xF0fJSIZOBkAMcVXq9Nwg0jeWFtpO4tebYdEAgF4c/s320/3200.jpg" width="320" /></a></div>
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<span style="font-size: x-small;"><span style="font-size: x-small;">White-cheeked Pintail x Cape Teal hybrid (same bird as in photo ID 3201 above)</span>, JCB Lakes, Rocester (Staffordshire, UK), 11th April 2017 - copyright <a href="https://www.flickr.com/photos/135695609@N03/" target="_blank">Philip Ridsdale</a></span></div>
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<span style="font-size: x-small;">(photo ID: 3200)</span></div>
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White-cheeked Pintail <i>Anas bahamensis</i><br />
Cape Teal <i>Anas capensis</i>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-79959199309749630262017-03-26T23:42:00.000+01:002017-03-26T23:44:20.861+01:00Recent updates<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgwxfH8OBFR2XNoeFzxbQ_naYAtA7VlcvVNj5ChMXgKS29j9a8W5_w5YtvmL6Mqs5-AgVhfCMAblV__Pes_ZeyvGmGWl6fmSx8aYSFy3oA1uhWOKw9cJhJbX6zaauTb0wQrqhocWeJZ9FE/s1600/3173.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgwxfH8OBFR2XNoeFzxbQ_naYAtA7VlcvVNj5ChMXgKS29j9a8W5_w5YtvmL6Mqs5-AgVhfCMAblV__Pes_ZeyvGmGWl6fmSx8aYSFy3oA1uhWOKw9cJhJbX6zaauTb0wQrqhocWeJZ9FE/s320/3173.jpg" width="320" /></a></div>
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<span style="font-size: x-small;">Black-headed Gull x Mediterranean Gull hybrid, Christopher Cadbury Reserve, Upton Warren (Worcestershire, UK), 12th March 2017 - copyright <a href="https://www.flickr.com/photos/johnswildlifephotos/" target="_blank">John Oates</a></span></div>
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<span style="font-size: x-small;">(photo ID: 3173)</span></div>
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Here's another of our regular posts letting you know what pages have been updated in the project recently. As always, a big thanks to all who have contributed photos and/or insights, and if you haven't done yet or have more to offer then please get in touch. You can comment on any thread if you have anything to say about the hybrids or topics covered, and if you have any photos you would be willing for us to use, please let us know (e.g. by <a href="mailto:bird.hybrids@gmail.com" target="_blank">emailing us</a>).<br />
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The recent updates are summarised below but remember you can find an <b>index list linking you to ALL the bird hybrids featured </b>so far here:<br />
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<li><a href="http://birdhybrids.blogspot.co.uk/2014/01/index-of-hybrid-birds.html" target="_blank">Index of bird hybrids</a></li>
</ul>
And an index list of all the bird hybrid topics covered so far here:<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/01/index-of-bird-hybrid-topics.html" target="_blank">Index of bird hybrid topics</a></li>
</ul>
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So, the <b>recent updates </b>are:
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New Bird Hybrid page added for:
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<li><a href="http://birdhybrids.blogspot.co.uk/2017/03/tufted-duck-x-lesser-scaup.html" target="_blank">Tufted Duck x Lesser Scaup</a></li>
</ul>
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New photos added to:
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<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/domestic-greylag-goose-x-canada-goose.html" target="_blank">domestic Greylag Goose x Canada Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/bar-headed-goose-x-barnacle-goose.html" target="_blank">Bar-headed Goose x Barnacle Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/03/wood-duck-x-mallard.html" target="_blank">Wood Duck x Mallard</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/03/gadwall-x-northern-shoveler.html" target="_blank">Gadwall x Northern Shoveler</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/03/eurasian-wigeon-x-northern-pintail.html" target="_blank">Eurasian Wigeon x Northern Pintail</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/american-black-duck-x-mallard.html" target="_blank">American Black Duck x Mallard</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/common-pochard-x-tufted-duck.html" target="_blank">Common Pochard x Tufted Duck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/tufted-duck-x-greater-scaup.html" target="_blank">Tufted Duck x Greater Scaup</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/03/pied-stilt-x-black-stilt.html" target="_blank">Pied Stilt x Black Stilt</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/03/black-headed-gull-x-mediterranean-gull.html" target="_blank">Black-headed Gull x Mediterranean Gull</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/03/blue-winged-warbler-x-golden-winged.html" target="_blank">Blue-winged Warbler x Golden-winged Warbler</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/01/house-sparrow-x-eurasian-tree-sparrow.html" target="_blank">House Sparrow x Eurasian Tree Sparrow</a></li>
</ul>
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Text updated in:
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<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2017/03/great-blue-heron-x-great-egret.html" target="_blank">Great Blue Heron x Great Egret</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2017/02/little-blue-heron-x-tricolored-heron.html" target="_blank">Little Blue Heron x Tricolored Heron</a></li>
</ul>
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Don't forget you can <b>follow us on Twitter </b>at <a href="https://twitter.com/BirdHybrids" target="_blank">@BirdHybrids</a><br />
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Enjoy browsing - and please do <a href="http://birdhybrids.blogspot.co.uk/2014/01/how-to-contribute.html" target="_blank">contribute</a> where you can!<br />
<br />Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-91036215722768693062017-03-26T23:29:00.000+01:002017-03-26T23:29:00.078+01:00Tufted Duck x Lesser Scaup<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgSjuTOYRE_AvY8cPasdNnJbSXk-3MtXC2GFKpgr_XQtbxErzjPwST6YDX_elR8YelnGF4uwwLO_60lb1Aoayn4uqtrOGXChvUpy49-L_Ep-UJ6vBGgrR60rOy5mY7rr3f1VeH2o_Y31A8/s1600/3144.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="229" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgSjuTOYRE_AvY8cPasdNnJbSXk-3MtXC2GFKpgr_XQtbxErzjPwST6YDX_elR8YelnGF4uwwLO_60lb1Aoayn4uqtrOGXChvUpy49-L_Ep-UJ6vBGgrR60rOy5mY7rr3f1VeH2o_Y31A8/s320/3144.jpg" width="320" /></a></div>
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<span style="font-size: x-small;">Tufted Duck x Lesser Scaup hybrid, Ambleside Duckpond, West Vancouver (British Columbia, Canada), 19th March 2007 - copyright <a href="https://www.flickr.com/photos/revs45/" target="_blank">Paul Kusmin</a></span></div>
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<span style="font-size: x-small;">(photo ID: 3144)</span></div>
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It seems pretty clear that this bird is a Tufted Duck x Scaup sp. hybrid but whether Greater or Lesser Scaup is involved is not so straightforward. The coarseness of the vermiculations on the upperpart is different from at least some Tufted Duck x Greater Scaup hybrids and I think that is very likely to point to Lesser Scaup parentage. In the two photos (above and below) the darkness of the upperparts looks different - that is often true in Tufted Duck x Scaup sp. hybrids, varying according to light and angle to the observer.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEip91HI1VzdjRBpWMpFafjJUlVV9dmhuOPICuP9qtGTf_mubIzHqofK3D-XKwXdZaSMWY_fQCvbJNvZxdG1Oz2Z10p09LD1wxsgHsPsfe7sSKNPoi67CyhMFxntz-Gg30lPvPHxuszaREI/s1600/3145.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEip91HI1VzdjRBpWMpFafjJUlVV9dmhuOPICuP9qtGTf_mubIzHqofK3D-XKwXdZaSMWY_fQCvbJNvZxdG1Oz2Z10p09LD1wxsgHsPsfe7sSKNPoi67CyhMFxntz-Gg30lPvPHxuszaREI/s320/3145.jpg" width="320" /></a></div>
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<span style="font-size: x-small;">Tufted Duck x Lesser Scaup hybrid (same bird as in photo ID 3144 above), Ambleside Duckpond, West Vancouver (British Columbia, Canada), 16th March 2007 - copyright <a href="https://www.flickr.com/photos/revs45/" target="_blank">Paul Kusmin</a></span></div>
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<span style="font-size: x-small;">(photo ID: 3145)</span></div>
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Tufted Duck x Lesser Scaup was the suggested ID for the following bird on the other side of the Atlantic (Tufted Ducks are vagrants among Lesser Scaup in North America while Lesser Scaups are vagrants among Tufted Ducks in Europe, so the hybrid is just as likely to occur on either continent). The identification of this bird was discussed but I couldn't see that any clear conclusions were reached - as always, comments welcome. There is also a video of this bird on <a href="https://www.youtube.com/watch?v=JnF2lF4nJm8&feature=youtu.be" target="_blank">YouTube</a>.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEizxTGyxo66asW7P8w_G-s6fzvuuqXL2jRF4RH6BwuBkAy_TWZYulZTAzkYJGwMoZDCeG20CVeuemGYp_5TG3-Dil14G5vRf0Puqb_myTiYVthxIOKlJJ2k8ny12t-luWAZghb8KVWj9yY/s1600/3065.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEizxTGyxo66asW7P8w_G-s6fzvuuqXL2jRF4RH6BwuBkAy_TWZYulZTAzkYJGwMoZDCeG20CVeuemGYp_5TG3-Dil14G5vRf0Puqb_myTiYVthxIOKlJJ2k8ny12t-luWAZghb8KVWj9yY/s320/3065.jpg" width="320" /></a></div>
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<span style="font-size: x-small;">possible Tufted Duck x Lesser Scaup hybrid, </span><span style="font-size: x-small;">Møllekrogen (Denmark), 14th October 2016 - copyright <a href="https://twitter.com/RasmusStrack" target="_blank">Rasmus Strack</a></span></div>
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<span style="font-size: x-small;">(photo ID: 3065)</span></div>
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<span style="font-size: x-small;">Tufted Duck <i>Aythya fuligula</i></span><br />
<span style="font-size: x-small;">Lesser Scaup <i>Aythya affinis</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-8161618819996962292017-03-02T17:59:00.000+00:002017-03-02T19:13:34.180+00:00Recent updates<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjvH1vW6rNZ6W6jsRGYLJa_Zk9VPnc8AZ9Pu4PaeDMPB97uBi4PIdJAfObwLLZswQheH7TjheVOYVkmxzF2k_s9EQRKP523c__Om_DHEHpN7gqYK_B5TuXDgbGxho2hMI_frDBt6IHgtCw/s1600/2976+IMG_0393.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="239" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjvH1vW6rNZ6W6jsRGYLJa_Zk9VPnc8AZ9Pu4PaeDMPB97uBi4PIdJAfObwLLZswQheH7TjheVOYVkmxzF2k_s9EQRKP523c__Om_DHEHpN7gqYK_B5TuXDgbGxho2hMI_frDBt6IHgtCw/s320/2976+IMG_0393.JPG" width="320" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">apparent Great Blue Heron x Great Egret hybrid, Fort de Soto Park, Pinellas County (Florida, USA), 17th August 2016 - copyright Dave Norgate</span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 2976)</span></div>
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<br />
At last I have managed to clear nearly all of the backlog of photos waiting to be uploaded here since my previous update, far too long ago. Below is a summary of what's gone in.<br />
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As always, a big thanks to all who have contributed photos and/or insights, and if you haven't done yet or have more to offer then please get in touch. You can comment on any thread if you have anything to say about the hybrids or topics covered, and if you have any photos you would be willing for us to use, please let us know (e.g. by <a href="mailto:bird.hybrids@gmail.com" target="_blank">emailing us</a>).<br />
<br />
The recent updates are summarised below but remember you can find an <b>index list linking you to ALL the bird hybrids featured </b>so far here:<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/01/index-of-hybrid-birds.html" target="_blank">Index of bird hybrids</a></li>
</ul>
And an index list of all the bird hybrid topics covered so far here:<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/01/index-of-bird-hybrid-topics.html" target="_blank">Index of bird hybrid topics</a></li>
</ul>
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<br />
<br />
So, the <b>recent updates </b>are:
<br />
<br />
<br />
New Bird Hybrid pages added for:
<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2017/03/black-bellied-whistling-duck-x-fulvous.html" target="_blank">Black-bellied Whistling-Duck x Fulvous Whistling-Duck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2017/03/tundra-bean-goose-x-greater-white.html" target="_blank">Tundra Bean Goose x Greater White-fronted Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2017/03/tunrda-bean-goose-x-barnacle-goose.html" target="_blank">Tundra Bean Goose x Barnacle Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2017/03/greater-white-fronted-goose-x-lesser.html" target="_blank">Greater White-fronted Goose x Lesser White-fronted Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2017/03/common-goldeneye-x-hooded-merganser.html" target="_blank">Common Goldeneye x Hooded Merganser</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2017/03/great-blue-heron-x-great-egret.html" target="_blank">Great Blue Heron x Great Egret</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2017/03/great-egret-x-snowy-egret.html" target="_blank">Great Egret x Snowy Egret</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2017/02/little-blue-heron-x-tricolored-heron.html" target="_blank">Little Blue Heron x Tricolored Heron</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2017/03/dunlin-x-white-rumped-sandpiper.html" target="_blank">Dunlin x White-rumped Sandpiper</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2017/02/black-chinned-hummingbird-x-broad.html" target="_blank">Black-chinned Hummingbird x Broad-tailed Hummingbird</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2017/02/warbling-vireo-x-red-eyed-vireo.html" target="_blank">Whiskered Vireo x Red-eyed Vireo</a></li>
</ul>
<br />
New photos added to:
<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/white-faced-whistling-duck-x-fulvous.html" target="_blank">White-faced Whistling-Duck x Fulvous Whistling-Duck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/01/swan-goose-x-greylag-goose_20.html" target="_blank">Swan Goose x Greylag Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/swan-goose-x-greylag-goose-x-canada.html" target="_blank">(Swan Goose x Greylag Goose) x Canada Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/greater-white-fronted-goose-x-bar.html" target="_blank">Greater White-fronted Goose x Bar-headed Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/greater-white-fronted-goose-x-canada.html" target="_blank">Greater White-fronted Goose x Canada Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/greater-white-fronted-goose-x-cackling.html" target="_blank">Greater White-fronted Goose x Cackling Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/lesser-white-fronted-goose-x-barnacle.html" target="_blank">Lesser White-fronted Goose x Barnacle Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/greylag-goose-x-canada-goose.html" target="_blank">Greylag Goose (wild/feral) x Canada Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/domestic-greylag-goose-x-canada-goose.html" target="_blank">Greylag Goose (domestic) x Canada Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/greylag-goose-x-barnacle-goose.html" target="_blank">Greylag Goose x Barnacle Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/01/mute-swan-x-domestic-goose_12.html" target="_blank">Greylag Goose x Mute Swan</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/bar-headed-goose-x-canda-goose.html" target="_blank">Bar-headed Goose x Canada Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/snow-goose-x-rosss-goose_28.html" target="_blank">Snow Goose x Ross's Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/snow-goose-x-cackling-goose.html" target="_blank">Snow Goose x Cackling Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/snow-goose-x-barnacle-goose.html" target="_blank">Snow Goose x Barnacle Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/rosss-goose-x-cackling-goose.html" target="_blank">Ross's Goose x Cackling Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/rosss-goose-x-barnacle-goose.html" target="_blank">Ross's Goose x Barnacle Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/03/dark-bellied-brent-goose-x-black-brant.html" target="_blank">Dark-bellied Brent Goose x Black Brant</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/03/egyptian-goose-x-ruddy-shelduck.html" target="_blank">Egyptian Goose x Ruddy Shelduck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/01/ruddy-shelduck-x-south-african-shelduck.html" target="_blank">Ruddy Shelduck x South African Shelduck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/02/ruddy-shelduck-x-common-shelduck.html" target="_blank">Ruddy Shelduck x Common Shelduck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/03/muscovy-duck-x-mallard.html" target="_blank">Muscovy Duck x Mallard</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/03/wood-duck-x-mallard.html" target="_blank">Wood Duck x Mallard</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/03/gadwall-x-eurasian-wigeon.html" target="_blank">Gadwall x Eurasian Wigeon</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/03/gadwall-x-mallard.html" target="_blank">Gadwall x Mallard</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/03/gadwall-x-northern-pintail.html" target="_blank">Gadwall x Northern Pintail</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/02/eurasian-wigeon-x-american-wigeon.html" target="_blank">Eurasian Wigeon x American Wigeon</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/03/eurasian-wigeon-x-chiloe-wigeon.html" target="_blank">Eurasian Wigeon x Chiloe Wigeon</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/03/eurasian-wigeon-x-mallard.html" target="_blank">Eurasian Wigeon x Mallard</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/mallard-x-mexican-duck.html" target="_blank">Mallard x Mexican Duck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/mallard-x-hawaiian-duck.html" target="_blank">Mallard x Hawaiian Duck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/mallard-x-indian-spot-billed-duck.html" target="_blank">Mallard x Indian Spot-billed Duck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/mallard-x-northern-pintail.html" target="_blank">Mallard x Northern Pintail</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/blue-winged-teal-x-cinnamon-teal.html" target="_blank">Blue-winged Teal x Cinnamon Teal</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/blue-winged-teal-x-northern-shoveler.html" target="_blank">Blue-winged Teal x Shoveler</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/white-cheeked-pintail-x-yellow-billed.html" target="_blank">White-cheeked Pintail x Yellow-billed (Speckled) Teal</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/06/red-crested-pochard-x-common-pochard.html" target="_blank">Red-crested Pochard x Common Pochard</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/06/red-crested-pochard-x-tufted-duck.html" target="_blank">Red-crested Pochard x Tufted Duck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/common-pochard-x-ferruginous-duck.html" target="_blank">Common Pochard x Ferruginous Duck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/common-pochard-x-tufted-duck.html" target="_blank">Common Pochard x Tufted Duck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/ferruginous-duck-x-tufted-duck.html" target="_blank">Ferruginous Duck x Tufted Duck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/05/reevess-pheasant-x-ring-necked-pheasant.html" target="_blank">Reeves's Pheasant x Ring-necked Pheasant</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/06/western-grebe-x-clarks-grebe.html" target="_blank">Western Grebe x Clark's Grebe</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/02/herring-gull-x-caspian-gull.html" target="_blank">Herring Gull x Caspian Gull</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/06/herring-gull-x-lesser-black-backed-gull.html" target="_blank">Herring Gull x Lesser Black-backed Gull</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/06/american-herring-gull-x-glaucous-gull.html" target="_blank">American Herring Gull x Glaucous Gull</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/06/carrion-crow-x-hooded-crow.html" target="_blank">Carrion Crow x Hooded Crow</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/06/black-capped-chickadee-x-mountain.html" target="_blank">Black-capped Chickadee x Mountain Chickadee</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/11/yellow-rumped-warbler-intergrades.html" target="_blank">'Myrtle Warbler' x 'Audubon's Warbler'</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/11/spotted-towhee-x-eastern-towhee.html" target="_blank">Spotted Towhee x Eastern Towhee</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/11/bullocks-oriole-x-baltimore-oriole.html" target="_blank">Bullock's Oriole x Baltimore Oriole</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/01/intersex-birds-and-their-confusion-with.html" target="_blank">Intersex birds (and their confusion with hybrids)</a></li>
</ul>
<br />
Text updated in:
<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/12/mallard-x-mottled-duck.html" target="_blank">Mallard x Mottled Duck</a></li>
</ul>
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<br />
Don't forget you can <b>follow us on Twitter </b>at <a href="https://twitter.com/BirdHybrids" target="_blank">@BirdHybrids</a><br />
<br />
Enjoy browsing - and please do <a href="http://birdhybrids.blogspot.co.uk/2014/01/how-to-contribute.html" target="_blank">contribute</a> where you can!<br />
<br />Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-60553281621852556112017-03-02T17:06:00.000+00:002017-03-02T17:06:30.758+00:00Dunlin x White-rumped Sandpiper<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZPvRRT3inV4yKTNITporosmIUEGs4uzcRJ-FsBRQuIGX5p3d4AUs0eierDgZ3HqjupKvhohAzcEoWMzomTXMW1UGd6sApDr6HbcFv1CCE1XixDDg8OGsnPdYEP_5eIgAPSnzitpuj4BM/s1600/2931.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="221" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZPvRRT3inV4yKTNITporosmIUEGs4uzcRJ-FsBRQuIGX5p3d4AUs0eierDgZ3HqjupKvhohAzcEoWMzomTXMW1UGd6sApDr6HbcFv1CCE1XixDDg8OGsnPdYEP_5eIgAPSnzitpuj4BM/s320/2931.jpg" width="320" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">Dunlin x White-rumped Sandpiper hybrid, Rock Point Provincial Park (Ontario, Canada), 19th May 2016 - copyright <a href="https://www.flickr.com/photos/146000359@N08/" target="_blank">Chris Cheatle</a></span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 2931)</span></div>
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There have now been quite a range of hybrid shorebirds recorded but this is the first calidrid hybrid we have featured in the Bird Hybrids project. Hopefully others will follow soon...<br />
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Apparently Chris's excellent set of photos were reviewed by two published shorebird authors, an OFO (Ontario
Federation of Ornithologists) and EBird reviewer and confirmed as this
combination by all. This spring bird appears to be in breeding plumage - juveniles moult out of juvenile plumage during their first winter and the patterning and freshness of the feathers in May mean these are not retained non-breeding feathers. Once that is understood it becomes clear that no pure species fits the bill. The head pattern and the breast spotting running down the foreflanks recalls White-rumped Sandpiper whereas the rufous in the scapulars is too extensive for that species. The bill is intermediate between the two species and Chris reports that the rump was generally white.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjmayoOCPnS-03bCJPgGGYtAMVNHNmuc94LDPZ9iATRbqfdEteszZBBGjsT51bWFiMph0mF-CwLxjtnjqqbY1gDszWrSNLiu3eoIuXPOWwej15SzzmAgGg-BBgbgIGTS6DM3Jxp1swGqMM/s1600/2933.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="208" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjmayoOCPnS-03bCJPgGGYtAMVNHNmuc94LDPZ9iATRbqfdEteszZBBGjsT51bWFiMph0mF-CwLxjtnjqqbY1gDszWrSNLiu3eoIuXPOWwej15SzzmAgGg-BBgbgIGTS6DM3Jxp1swGqMM/s320/2933.jpg" width="320" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhzuzTUoPc70Cc15E7RDWjzAZJoVKJ-TUX4F_ih0Gjq43t88QlUm0x4HZbMbKp19sdftkJninwbIPCq_35HMRn2IKTY8lGrDNh2opLqT_W1r6uW5A8w73JAH_Ko_-_bZPk2AOKzFI8gQcI/s1600/2934.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="219" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhzuzTUoPc70Cc15E7RDWjzAZJoVKJ-TUX4F_ih0Gjq43t88QlUm0x4HZbMbKp19sdftkJninwbIPCq_35HMRn2IKTY8lGrDNh2opLqT_W1r6uW5A8w73JAH_Ko_-_bZPk2AOKzFI8gQcI/s320/2934.jpg" width="320" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgn8YkqQ3cdQ3S0nxkl64LO6L5URh32-yc2Nw77EQIMxuTgt9Es0OS_UHjXjyTIUNQkY5G-1Wc2q72X9Ps5aXBNt54n76dTIYmgXaNIbams25qZkjRdA15n0VT9hS0p7JWSln4IpxZCZi0/s1600/2935.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="170" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgn8YkqQ3cdQ3S0nxkl64LO6L5URh32-yc2Nw77EQIMxuTgt9Es0OS_UHjXjyTIUNQkY5G-1Wc2q72X9Ps5aXBNt54n76dTIYmgXaNIbams25qZkjRdA15n0VT9hS0p7JWSln4IpxZCZi0/s320/2935.jpg" width="320" /></a></div>
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<span style="font-size: x-small;">Dunlin x White-rumped Sandpiper hybrid (same bird as in phtoo ID 2931 above), Rock Point Provincial Park (Ontario, Canada), 19th May 2016 - copyright <a href="https://www.flickr.com/photos/146000359@N08/" target="_blank">Chris Cheatle</a></span></div>
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<span style="font-size: x-small;">(photo IDs: 2932-2939)</span></div>
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<span style="font-size: x-small;">Dunlin <i>Calidris alpina</i></span><br />
<span style="font-size: x-small;">White-rumped Sandpiper <i>Calidris fuscicollis</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-27013212596065207322017-03-01T18:03:00.000+00:002017-03-01T18:03:16.197+00:00Black-bellied Whistling-Duck x Fulvous Whistling-Duck<div class="separator" style="clear: both; text-align: center;">
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<span style="font-size: x-small;">Black-bellied Whistling-Duck x Fulvous Whistling-Duck hybrid, Moon Lake, Progreso Lakes, Hidalgo County (Texas, USA), 28th December 2016 - copyright Daniel Jones</span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 2998)</span></div>
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Hybrids between various species of Whistling-Duck seem to crop up quite frequently in captivity but wild-bred Whistling-Duck hybrids seem to be much more unusual. This bird has the dark chestnut upperparts of Black-bellied with subtle pale tips to the feathers that are intermediate between the two species (plain on Black-bellied, clearly barred on Fulvous). The dull head, the bill and legs lacking bright colours and the lack of a black belly are all possible on a young Black-bellied Whistling-Duck, but that cannot be the explanation here as the belly is also distinctly orange. The vent (beneath the tail) is white, like Fulvous, and the black marks on the foreneck also recall those on a Fulvous Whistling-Duck. Daniel's flight photos also reveal that this bird is missing the pale stripe through the centre of the upperwing that is found on Black-bellied Whistling-Duck<br />
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<span style="font-size: x-small;">Black-bellied
Whistling-Duck x Fulvous Whistling-Duck hybrid (same bird as in photo ID 2998 above; with Black-bellied Whistling-Ducks), Moon Lake, Progreso
Lakes, Hidalgo County (Texas, USA), 28th December 2016 - copyright
Daniel Jones</span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo IDs: 2999-3003)</span></div>
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<span style="font-size: x-small;">Black-bellied Whistling-Duck <i>Dendrocygna autumnalis</i></span><br />
<span style="font-size: x-small;">Fulvous Whistling-Duck <i>Dendrocygna bicolor</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com1tag:blogger.com,1999:blog-8553998527275861247.post-72703002939379303542017-03-01T16:26:00.001+00:002017-03-01T16:26:46.946+00:00Greater White-fronted Goose x Lesser White-fronted Goose<div class="separator" style="clear: both; text-align: center;">
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<span style="font-size: x-small;">probable Greater White-fronted Goose x Lesser White-fronted Goose hybrid, Oudeland van Strijen (Zuid-Holland, Netherlands), 22nd February 2015 - copyright Diederik Kok</span></div>
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<span style="font-size: x-small;">(photo ID: 3010)</span></div>
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There is quite a lot of variation in both Greater and Lesser White-fronted Geese so proving hybrids between them is quite difficult. I am not entirely certain that pure Greater White-fronted Goose can be discounted for this individual as there probably isn't any single feature shown by this bird that does not sometimes appear on them. However the combination of conspicuous yellow eye-ring, limited dark belly markings and slightly short-looking very pink bill make me think it is a good candidate. There isn't much in the size or structure visible in the photos to clinch it though, so I am a bit cautious about labelling this as a definite hybrid.<br />
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<span style="font-size: x-small;">probable Greater
White-fronted Goose x Lesser White-fronted Goose hybrid (with Greater White-fronted Geese; same bird as in photo ID 3010 above), Oudeland van
Strijen (Zuid-Holland, Netherlands), 22nd February 2015 - copyright
Diederik Kok</span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo IDs: 3011-3012)</span></div>
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<span style="font-size: x-small;">Greater White-fronted Goose <i>Anser albifrons</i></span><br />
<span style="font-size: x-small;">Lesser White-fronted }Goose <i>Anser erythropus</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-33352188565778510672017-03-01T16:01:00.000+00:002017-03-01T16:01:38.145+00:00Tunrda Bean Goose x Barnacle Goose<div class="separator" style="clear: both; text-align: center;">
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<span style="font-size: x-small;">Tunrda Bean Goose x Barnacle Goose hybrid (with Tundra Bean Geese), Oost (Texel, Netherlands), 30th December 2016 - copyright Diederik Kok</span></div>
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<span style="font-size: x-small;">(photo ID: 3006)</span></div>
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The pale cheek with a reddish brown lower rear section reminds me of some Red-breasted Goose hybrids but I don't think that can be the case here. I've never seen Tundra Bean x Red-breasted but based on how White-fronted Goose x Red-breasted Goose hybrids look I would expect a darker body and a more obviously smaller bird. So I think Barnacle Goose seems the better solution for the white-cheeked parent. It would be difficult to say for sure what the grey goose parent was but the fact that it is surrounded by Tundra Bean Goose makes that a pretty good bet - and the bright orange legs and pale belly are certainly consistent with that.<br />
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<span style="font-size: x-small;">Tundra Bean Goose <i>Anser serrirostris </i>(formerly <i>Anser fabalis rossicus</i>)</span><br />
<span style="font-size: x-small;">Barnacle Goose <i>Branta leucopsis</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-71372657810210843102017-03-01T15:48:00.002+00:002017-03-01T15:58:48.053+00:00Tundra Bean Goose x Greater White-fronted Goose<div class="separator" style="clear: both; text-align: center;">
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<div style="text-align: center;">
<span style="font-size: x-small;">probable Tundra Bean Goose x Greater White-fronted Goose hybrid (with Tundra Bean Geese), Oost (Texel, Netherlands), 29th December 2016 - copyright Diederik Kok</span></div>
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<span style="font-size: x-small;">(photo ID: 3004)</span></div>
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Convincing examples of hybrids between some of the wild Anser species that occur in Europe are surprisingly hard to come by. Perhaps that is because the hybrids are genuinely scarce, or perhaps it is hybrids are difficult to detect and even harder to prove, with variation in parent species considerable. I suspect it's the latter but maybe in time this will become more clear. This one looks like a promising candidate to me, although proving it is not an odd but genetically pure Tundra Bean Goose is not straightforward.<br />
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The white round the base of the bill is not enough on its own to reject pure Tundra Bean Goose - quite often they have a little white round the bill. Usually this is broken on pure birds, not surrounding the whole of the upper mandible in a continuous line. Not only is it continuous here but it's quite broad at the top too. Perhaps that is possible in pure Tundra Bean - it wouldn't surprise me if so - but this bird also has a lot of dark shading behind the white, something that I don't recall seeing to this extent on a Tundra Bean Goose. The extent of orange on the bill may not be too excessive for Tundra Bean Goose (though is not usual) but it also seems to have a pinky tone to it. I think in combination these features point to a likely hybrid origin, although I am troubled by how perfect the rest of the bird looks for Tundra Bean Goose. Maybe it is just a very unusual Tundra Bean Goose, but I am more convinced by this bird being a hybrid than others I've seen where the hybrid ID has been suggested.<br />
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In addition Diederik thought this bird called differently from the Tundra Bean Geese. He has a recording of it at <a href="https://waarneming.nl/sound/4/51874.mp3" target="_blank">waarneming.nl</a>. I think it's quite a subtle difference, but that may be because I don't hear Tunrda Bean Geese calling often enough!<br />
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As always, comments are welcome!<br />
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<div style="text-align: center;">
<span style="font-size: x-small;">probable Tundra Bean Goose
x Greater White-fronted Goose hybrid (same bird as in photo ID 3004 above; with Tundra Bean Geese), Oost (Texel, Netherlands), 29th
December 2016 - copyright Diederik Kok</span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 3005)</span></div>
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<span style="font-size: x-small;">Tundra Bean Goose <i>Anser serrirostris</i> (formerly <i>Anser fabalis rossicus</i>)</span><br />
<span style="font-size: x-small;">Greater White-fronted Goose <i>Anser albifrons</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-46266483033018282572017-03-01T15:12:00.000+00:002017-03-06T20:48:08.390+00:00Great Blue Heron x Great Egret<div class="separator" style="clear: both; text-align: center;">
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<span style="font-size: x-small;">Great Blue Heron x Great Egret hybrid, </span><span style="font-size: x-small;"><span style="font-size: x-small;">Fort de Soto Park, Pinellas County </span>(Florida, USA), 17th August 2016 - copyright Dave Norgate</span></div>
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<span style="font-size: x-small;">(photo ID: 2976)</span></div>
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The long kinked neck of this intriguing bird is very much like that of a Great Egret, but in other respects the structure of this bird seems to resemble Great Blue Heron as much. The grey plumage and the bill do not belong on a Great Egret, whereas the yellow lores must come from an Egret species. The latter, along with the neck structure, help rule out Würdemann's Heron (the hybrid or intergrade between Great White Heron (the white form <i>occidentalis </i>of Great Blue Heron that occurs in southernmost Florida) and typical Great Blue Heron.<br />
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Thanks to Steve Mlodinow for pointing out that this bird has been accepted as this hybrid by eBird reviewers and photographed by other observers over six months. <br />
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<span style="font-size: x-small;">Great Blue Heron x Great Egret hybrid (same bird as in photo ID 2976 above), </span><span style="font-size: x-small;"><span style="font-size: x-small;">Fort de Soto Park, Pinellas County </span>(Florida, USA), 17th August 2016 - copyright Dave Norgate</span></div>
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<span style="font-size: x-small;">(photo IDs: 2977-2986)</span></div>
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<span style="font-size: x-small;">Great Blue Heron <i>Ardea herodias</i></span><br />
<span style="font-size: x-small;">Great Egret <i>Ardea alba</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com3tag:blogger.com,1999:blog-8553998527275861247.post-55502820374364159902017-03-01T14:44:00.001+00:002017-03-01T14:44:17.292+00:00Common Goldeneye x Hooded Merganser<div class="separator" style="clear: both; text-align: center;">
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<span style="font-size: x-small;">Common Goldeneye x Hooded Merganser hybrid, Ottawa River (Ontario, Canada), 26th October - copyright Gordon Johnston</span></div>
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<span style="font-size: x-small;">(photo ID: 2997)</span></div>
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Goldeneye sp. x Hooded Merganser hybrids are fairly frequently reported in the wild and broadly speaking this is a typical plumage for either. The majority of reports probably relate to Common Goldeneye x Hooded Merganser. The head colour seems to reflect that of the Goldeneye parent species at least in many instances, but you can't really make that out here. However the extent of white in the scapulars helps clinch this one as involving Common Goldeneye rather than Barrow's Goldeneye.<br />
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We already have a page featuting a probable female <a href="http://birdhybrids.blogspot.co.uk/2015/02/goldeneye-sp-x-hooded-merganser.html" target="_blank">Goldeneye sp. x Hooded Merganser</a> which, in view of the extent of yellow on its bill is possibly more likely to involve Barrow's Goldeneye.<br />
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<span style="font-size: x-small;">Common Goldeneye <i>Bucephala clangula</i></span><br />
<span style="font-size: x-small;">Barrow's Goldeneye <i>Bucephala islandica</i></span><br />
<span style="font-size: x-small;">Hooded Merganser <i>Lophodytes cucullatus</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-87979931790348943202017-03-01T12:06:00.000+00:002017-03-01T12:06:01.712+00:00Great Egret x Snowy Egret<div class="separator" style="clear: both; text-align: center;">
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<span style="font-size: x-small;">Great Egret x Snowy Egret hybrid, Fort de Soto Park, Pinellas County (Florida, USA), 18th August 2016 - copyright Dave Norgate</span></div>
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<span style="font-size: x-small;">(photo ID: 2987)</span></div>
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Dave says this bird seemed intermediate in size between Great Egret and Snowy Egret. Structurally it seems to have an intermediate neck length and shape - you can see a hint of the kinked shape of Great Egret in some of the photos but it's not as clear as in a pure bird. The bare parts also seem to be consistent with expectations for this hybrid. Certainly the legs are wrong for Snowy Egret being entirely black right down to the bottom of the feet. The gape line only extends back to below the cetnre of the eye, just like it does on Snowy Egret. On Great Egret it would extend right back to beyond the back of the eye. The only pure species I could possibly turn this into is Intermediate Egret, which in some respects it quite closely resembles. However, although the Asian form of Intermediate Egret apparently does adopt a black bill in breeding condition (I don't believe the African form does) this bird is showing no sign of being in breeding condition. I don't think the bill structure is quite right for Intermediate Egret either, and of course an Asian Intermediate Egret is rather unlikely in Florida - there are one or two ABA-area records but only from the Aleutian Islands in western Alaska so far as I know.<br />
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<span style="font-size: x-small;">Great Egret x Snowy Egret hybrid (same bird as in photo ID 2987 above), </span><span style="font-size: x-small;"><span style="font-size: x-small;">Fort de Soto Park, Pinellas County </span>(Florida, USA), 18th August 2016 - copyright Dave Norgate</span></div>
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<span style="font-size: x-small;">(photo IDs: 2988-2991)</span></div>
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<span style="font-size: x-small;">Great Egret <i>Ardea alba</i></span><br />
<span style="font-size: x-small;">Snowy Egret <i>Egretta thula</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com3tag:blogger.com,1999:blog-8553998527275861247.post-30096219833295167032017-02-28T17:43:00.000+00:002017-03-06T20:46:08.783+00:00Little Blue Heron x Tricolored Heron<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnjRYl3VFlHPo1wzeoOBZuAs6fqyBpiJsgV9JkDEabIrp3KcAVINrET6dF2sL5AIVKEbMN_uELmaPnTGHsaj8MUNHuQSDGYiHEHIZeVJH2dudcP-cC09aimC3KHC980VKurJc62TBGW0A/s1600/2917.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnjRYl3VFlHPo1wzeoOBZuAs6fqyBpiJsgV9JkDEabIrp3KcAVINrET6dF2sL5AIVKEbMN_uELmaPnTGHsaj8MUNHuQSDGYiHEHIZeVJH2dudcP-cC09aimC3KHC980VKurJc62TBGW0A/s320/2917.jpg" width="278" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">Little Blue Heron x Tricolored Heron hybrid, Hammonasset State Park (Connecticut, USA), 23rd July 2013 - copyright <a href="https://www.flickr.com/photos/lenblumin/" target="_blank">Len Blumin</a></span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 2917)</span></div>
<br />
<br />
Len makes a good case for the hybrid ID of this interesting bird. Initially I was not entirely convinced but thought it was worth putting out there for others to comment on, and to see if other birds like this come out of the woodwork. Turns out it was worth it as more information came to light.<br />
<br />
As Len says, this bird's posture and structure resembles that of a Tricolored Heron, and of course much of the plumage does too. Apparently some think the bill is intermediate in structure between Tricolored and Little Blue - a bit too subtle for my eye if so. The obvious anomaly for pure Tricolored in terms of plumage is the grey belly and thighs (better seen on the photos below) - Tricolored should be pure white here. Len has considered if this might be melanism but thinks this is unlikely on feathers that should be pure white. I wasn't so sure about that - certainly there are records of normally white herons that have appeared grey, although at least some of these have been contaminated rather than being genuinely melanistic. Nevertheless, in some cases they had a very even covering of grey and contamination was not obvious, so I was not completely convinced that we could rule that out in this case.<br />
<br />
There are a couple of other features that Len points to that support Little Blue Heron involvement. One of those is the iris colour which Len describes as pale yellow, or straw yellow. It's normally brown, red or pink on adult Tricolored Heron. I think a pale yellow iris is ok on immature Tricolored Heron (but Len's bird doesn't show any signs of juvenile plumage) - is it ok in an adult? I don't get to see many Tricolored Herons, being in the UK, so trawled through some images online. On some birds the majority of the iris seems to be yellowish but surrounded by pink or red on the outside of it, while on others even that wasn't very clear, such as <a href="https://www.flickr.com/photos/jpescatore/15644200057/sizes/l" target="_blank">this one</a>. So wasn't quite sure about this - did this really rule out pure Tricolored Heron?<br />
<br />
Finally Len also draws attention to the manner in which it was feeding. He writes, "The bird foraged rather deliberately looking for fish, as we often see with the Little Blue, whereas the usual Tricolored foraging is often more active, even frenetic, recalling the fishing technique of the Reddish Egret cousin."<br />
<br />
So, I wondered, is there enough to call this a hybrid, or is it more likely a very odd but genetically pure Tricolored Heron? Well, it turns out there were 2-3 birds seen in the area in the autumn of 2011 which superficially resembled first calendary-year Tricolored Herons but with anomalies including excessive <i>white </i>in the plumage. They continued into the following year and some observers recognised that the white in the plumage might be a result of hybridisation with Little Blue Heron, noting an intermediate bill structure. However it was hard to be sure that the white wasn't down to leucism until the birds were seen again later on in 2012 and in subsequent years. Just as Little Blue Herons of this age would turn from white to grey, the amolous features of these birds (or at least one of them) had turned from including too much white to too much grey. The evidence for them being hybrids with Little Blue Heron had suddenly became a lot stronger. The records have now been accepted on eBird as this hybrid. Thanks to Steve Mlodinow for drawing my attention to this, and you can read about it more on <a href="http://www.shorebirder.com/2012/08/hybrid-tricolored-x-little-blue-heron.html" target="_blank">Nick Bonomo's website</a> and see photos of one of the birds in their second calendar-year.<br />
<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhsxFBaVwFkw0-lCuAiMOe8yCl6NF9LXToSej6ztWBce06ke56_nFHpTY4huhg6HqZQShOEdF2_VGcUC8iBLoLBVqAOuGzcd8qwALINrcU6FbiPGTVI3FvaiqVTYLRQiQn3BaNvswBR740/s1600/2918.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhsxFBaVwFkw0-lCuAiMOe8yCl6NF9LXToSej6ztWBce06ke56_nFHpTY4huhg6HqZQShOEdF2_VGcUC8iBLoLBVqAOuGzcd8qwALINrcU6FbiPGTVI3FvaiqVTYLRQiQn3BaNvswBR740/s320/2918.jpg" width="214" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">Little Blue Heron x Tricolored Heron hybrid (same bird as in photo ID
2917 above), Hammonasset State Park (Connecticut, USA), 23rd July 2013 -
copyright <a href="https://www.flickr.com/photos/lenblumin/" target="_blank">Len Blumin</a></span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 2918)</span></div>
<br />
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj-5nTMOcl_7UZn0XDWA7vpVezuVoh4by73o5gNQMFUWJnFWwIR17B1IvpvM9AatvFLZF3JDMy7dX9qcxRdoIzqDonGqnPBYFwZOaOFLaW2zaxvktmflP4OAgjmZ2QyAqnuYlTPh-KC4LA/s1600/2919.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="250" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj-5nTMOcl_7UZn0XDWA7vpVezuVoh4by73o5gNQMFUWJnFWwIR17B1IvpvM9AatvFLZF3JDMy7dX9qcxRdoIzqDonGqnPBYFwZOaOFLaW2zaxvktmflP4OAgjmZ2QyAqnuYlTPh-KC4LA/s320/2919.jpg" width="320" /></a></div>
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<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6WCGhRQirYr5hT2jtNwWyW3Ns2h_Li2eKoTAIkIV0NHTsDcT8SNFL2WD1YU216LLmFHv5jXtVtZ_Bim9n2qqU-os1X5kEzMUJ2r0bC-3p27sv8R_p4yZZltvWx0KNs0gPobAo6I1C7d4/s1600/2920.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="188" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6WCGhRQirYr5hT2jtNwWyW3Ns2h_Li2eKoTAIkIV0NHTsDcT8SNFL2WD1YU216LLmFHv5jXtVtZ_Bim9n2qqU-os1X5kEzMUJ2r0bC-3p27sv8R_p4yZZltvWx0KNs0gPobAo6I1C7d4/s320/2920.jpg" width="320" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">Little Blue Heron x Tricolored Heron hybrid (same bird as in photo IDs
2917-2918 above), Hammonasset State Park (Connecticut, USA), 28th July 2013 -
copyright <a href="https://www.flickr.com/photos/lenblumin/" target="_blank">Len Blumin</a></span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo IDs: 2919-2920)</span></div>
<br />
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi0NooQh8EqGCND8fqCmkQhGJP7tkXHPXroc6tu-5bDrnRxN95RVQ6ZkeRlAxuzJ5EG5Hf5afP27CSx6zKS-bU1k6Ev4O1CyF3JCMidTW6wMBuR5CiV26xbY1r5ap4eVOT_3hXMJtAbcjE/s1600/2921.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi0NooQh8EqGCND8fqCmkQhGJP7tkXHPXroc6tu-5bDrnRxN95RVQ6ZkeRlAxuzJ5EG5Hf5afP27CSx6zKS-bU1k6Ev4O1CyF3JCMidTW6wMBuR5CiV26xbY1r5ap4eVOT_3hXMJtAbcjE/s320/2921.jpg" width="251" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">Little Blue Heron x Tricolored Heron hybrid (same bird as in photo IDs 2917-2920 above), Hammonasset State Park (Connecticut, USA), 31st July 2013 - copyright <a href="https://www.flickr.com/photos/lenblumin/" target="_blank">Len Blumin</a></span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 2921)</span></div>
<br />
<br />
<br />
<span style="font-size: x-small;">Little Blue Heron <i>Egretta caerulea</i></span><br />
<span style="font-size: x-small;">Tricolored Heron <i>Egretta tricolor</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-12588215304987934302017-02-27T18:32:00.003+00:002017-02-27T18:32:32.872+00:00Warbling Vireo x Red-eyed Vireo<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiXucUvU3vVKFoDvNw-04LlqiiVtQWUdIzgNqftevi5jIg4L-Omzwg04tA9RlsdfOLO_I_NWkE-_bya5Fe4nNNSzi4UXZhsSmkM4s75tTqMe896x0FnV3ZHjhbazK4ru0XmXMbP35LrlbI/s1600/2876.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="279" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiXucUvU3vVKFoDvNw-04LlqiiVtQWUdIzgNqftevi5jIg4L-Omzwg04tA9RlsdfOLO_I_NWkE-_bya5Fe4nNNSzi4UXZhsSmkM4s75tTqMe896x0FnV3ZHjhbazK4ru0XmXMbP35LrlbI/s320/2876.jpg" width="320" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">Warbling Vireo x Red-eyed Vireo hybrid, Lone Dome SWA, Montezuma County (Colorado, USA), 24th May 2016 - copyright <a href="https://www.flickr.com/photos/36088296@N08/" target="_blank">Steve Mlodinow</a></span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 2876)</span></div>
<br />
<br />
Steve points out the rather long, hooked bill, olive hues to the ear-coverts and the dark lateral crown line to fairly deep grey crown as indicating the Red-eyed Vireo heritage.<br />
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<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgu9zLN1HNRnK8M8_8FEVIwvoZa_the4XwTerSGIg7FehOOn1pkIGjKQBV53vplXDycc_j5hhIeToem4iZ9vDlonvc3n5zQpg0Q5jlx-scARjVJUfr3ogBSSLuO0juWt8pvjmBEUT5jK_Y/s1600/2877.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgu9zLN1HNRnK8M8_8FEVIwvoZa_the4XwTerSGIg7FehOOn1pkIGjKQBV53vplXDycc_j5hhIeToem4iZ9vDlonvc3n5zQpg0Q5jlx-scARjVJUfr3ogBSSLuO0juWt8pvjmBEUT5jK_Y/s320/2877.jpg" width="299" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">Warbling Vireo x Red-eyed Vireo hybrid (same bird as in photo ID 2876 above), Lone Dome SWA, Montezuma County (Colorado, USA), 24th May 2016 - copyright <a href="https://www.flickr.com/photos/36088296@N08/" target="_blank">Steve Mlodinow</a></span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 2877)</span></div>
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<br />
<br />
<span style="font-size: x-small;">Warbling Vireo <i>Vireo gilvus</i></span><br />
<span style="font-size: x-small;">Red-eyed Vireo <i>Vireo olivaceus</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-28942495189091125642017-02-27T18:24:00.000+00:002017-02-27T18:24:30.772+00:00Black-chinned Hummingbird x Broad-tailed Hummingbird<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjRk3kAVzjmqklHDApV8QksyMnC8WtJcA1hCi0-1sgYcgqTiCsl8O0Z3yzZR4pQIoIkns5AnHQx-Zi9njHhb2B5G3XIn7TvJYVImDAHfbqEYfkif8oqdLk7fEjzUcfxaFw4YkW3GRN4Syg/s1600/2878.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="274" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjRk3kAVzjmqklHDApV8QksyMnC8WtJcA1hCi0-1sgYcgqTiCsl8O0Z3yzZR4pQIoIkns5AnHQx-Zi9njHhb2B5G3XIn7TvJYVImDAHfbqEYfkif8oqdLk7fEjzUcfxaFw4YkW3GRN4Syg/s320/2878.jpg" width="320" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">Black-chinned Hummingbird x Broad-tailed Hummingbird, Longmont, Boulder County (Colorado, USA), 8th July 2015 - copyright <a href="https://www.flickr.com/photos/36088296@N08/" target="_blank">Steve Mlodinow</a></span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 2878)</span></div>
<br />
<br />
Steve picked up on this bird as being rather different from Black-chinned Hummingbirds. He writes:<br />
<blockquote>
"The primary tips are distinctly narrower, a bit straighter. The back color is actually rather like that of a Broad-tailed Hummingbird, which would explain the narrow, straight primary tips. And... the inner primaries do not form a straight line, but start to widen after P4 or so, consistent with a non-<i>Archilochus </i>parent. Such as a Broad-tailed."</blockquote>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPzVzsd8Pu6tTklUb3fqbc1irwXkZRYbQEzCN2bZ5AbkZKWXFM09YURa_iadI9Q0OC1OKJhqkX__KBJgKF2DOyAstxF-gLItgkwsv78aQVYTCn8irSGNVsImPiy-G7y_Q5yx5RMHZ7G2M/s1600/2879.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="261" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPzVzsd8Pu6tTklUb3fqbc1irwXkZRYbQEzCN2bZ5AbkZKWXFM09YURa_iadI9Q0OC1OKJhqkX__KBJgKF2DOyAstxF-gLItgkwsv78aQVYTCn8irSGNVsImPiy-G7y_Q5yx5RMHZ7G2M/s320/2879.jpg" width="320" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">Black-chinned
Hummingbird x Broad-tailed Hummingbird (same bird as in photo ID 2878 above), Longmont, Boulder County
(Colorado, USA), 8th July 2015 - copyright <a href="https://www.flickr.com/photos/36088296@N08/" target="_blank">Steve Mlodinow</a></span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 2879)</span></div>
<br />
<br />
<br />
<span style="font-size: x-small;">Black-chinned Hummingbird <i>Archilochus alexandri</i></span><br />
<span style="font-size: x-small;">Broad-tailed Hummingbird <i>Selasphorus platycercus</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com3tag:blogger.com,1999:blog-8553998527275861247.post-24751708711406599872017-01-21T23:46:00.001+00:002017-01-21T23:46:47.682+00:00Recent updates (or in this case, not so recent updates)<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjMuDq5EpBdgsGrx7e1CLSlska3Qbh5asgRZ8un_sUC-x5ShbOhwQDXYb-FDrFYRyZ_hno7XVA7Akgg2Pu1Ftss88t_8LY5HuKOlOGFD1Dq-0KwEzFiyRb7Zif8dhVhHNtpKOLcb7XC5Cg/s1600/2745.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="284" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjMuDq5EpBdgsGrx7e1CLSlska3Qbh5asgRZ8un_sUC-x5ShbOhwQDXYb-FDrFYRyZ_hno7XVA7Akgg2Pu1Ftss88t_8LY5HuKOlOGFD1Dq-0KwEzFiyRb7Zif8dhVhHNtpKOLcb7XC5Cg/s320/2745.JPG" width="320" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">Sedge Warbler x Eurasian Reed-Warbler hybrid, Lac de Grand-Lieu (Loire-Atlantique, France), 6th September 2015 - copyright Sébastien Reeber</span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 2745)</span></div>
<br />
<br />
Firstly let me apologise for the inaction here over the last few months. Last year proved more hectic than I imagined and keeping on top of this became impossible for a while. The good news is I'm now in a position to get things moving again, so look forward to more regular posts once again in the near future - and a big backlog to clear first.<br />
<br />
<br />
I normally do a "recent updates" post periodically to let people know what's been added to the project since the last "recent updates" post. Well there have been a few updates since the last "recent updates" post, but it's stretching things a bit to call them recent!<br />
<br />
As always, a big thanks to all who
have contributed photos and/or insights, and if you haven't done yet
or have more to offer then please get in touch. You can comment on any thread if you have
anything to say about the hybrids or topics covered, and if you have any
photos you would be willing for us to use, please let us know (e.g. by <a href="mailto:bird.hybrids@gmail.com" target="_blank">emailing us</a>).<br />
<br />
The recent updates are summarised below but remember you can find an <b>index list linking you to ALL the bird hybrids featured </b>so far here:<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/01/index-of-hybrid-birds.html" target="_blank">Index of bird hybrids</a></li>
</ul>
And an index list of all the bird hybrid topics covered so far here:<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/01/index-of-bird-hybrid-topics.html" target="_blank">Index of bird hybrid topics</a></li>
</ul>
<br />
<br />
<br />
So, the <b>not-so-recent updates </b>are:
<br />
<br />
<br />
New Bird Hybrid pages added for:
<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/03/mute-swan-x-black-swan.html" target="_blank">Mute Swan x Black Swan</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/03/chiloe-wigeon-x-cape-teal.html" target="_blank">Chiloe Wigeon x Cape Teal</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/03/northern-shoveler-x-garganey.html" target="_blank">Northern Shoveler x Garganey</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/03/black-headed-gull-x-mediterranean-gull.html" target="_blank">Black-headed Gull x Mediterranean Gull</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/03/sedge-warbler-x-eurasian-reed-warbler.html" target="_blank">Sedge Warbler x Eurasian Reed-Warbler</a></li>
</ul>
<br />
New photos added to:
<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/01/intersex-birds-and-their-confusion-with.html" target="_blank">Intersex birds (and their confusion with hybrids)</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/mute-swan-x-whooper-swan.html" target="_blank">Mute Swan x Whooper Swan</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/greater-white-fronted-goose-x-cackling.html" target="_blank">Greater White-fronted Goose x Cackling Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/domestic-greylag-goose-x-canada-goose.html" target="_blank">domestic Greylag Goose x Canada Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/snow-goose-x-cackling-goose.html" target="_blank">Snow Goose x Cackling Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/rosss-goose-x-barnacle-goose.html" target="_blank">Ross's Goose x Barnacle Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/rosss-goose-x-cackling-goose.html" target="_blank">Ross's Goose x Cackling Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/03/dark-bellied-brent-goose-x-black-brant.html" target="_blank">Dark-bellied Brent Goose x Black Brant</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/02/ruddy-shelduck-x-common-shelduck.html" target="_blank">Ruddy Shelduck x Common Shelduck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/02/eurasian-wigeon-x-american-wigeon.html" target="_blank">Eurasian Wigeon x American Wigeon</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/03/probable-american-wigeon-x-mallard-x.html" target="_blank">American Wigeon x Mallard</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/american-black-duck-x-mallard.html" target="_blank">American Black Duck x Mallard</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/mallard-x-northern-pintail.html" target="_blank">Mallard x Northern Pintail</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/mallard-x-red-crested-pochard.html" target="_blank">Mallard x Red-crested Pochard</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/01/yellow-billed-speckled-teal-x-marbled.html" target="_blank">Yellow-billed Teal x Marbled Teal</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/06/red-crested-pochard-x-common-pochard.html" target="_blank">Red-crested Pochard x Common Pochard</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/ferruginous-duck-x-tufted-duck.html" target="_blank">Ferruginous Duck x Tufted Duck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/03/bufflehead-x-common-goldeneye.html" target="_blank">Bufflehead x Common Goldeneye</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/05/reevess-pheasant-x-ring-necked-pheasant.html" target="_blank">Reeves's Pheasant x Ring-necked Pheasant</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/03/black-headed-gull-x-mediterranean-gull.html" target="_blank">Black-headed Gull x Mediterranean Gull</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/11/yellow-rumped-warbler-intergrades.html" target="_blank">Yellow-rumped Warbler intergrades ('Myrtle Warbler' x 'Audubon's Warbler')</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/12/western-meadowlark-x-eastern-meadowlark.html" target="_blank">Western Meadowlark x Eastern Meadowlark</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/02/european-goldfinch-x-island-canary.html" target="_blank">European Goldfinch x Island Canary</a></li>
</ul>
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Text updated in:
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<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/03/galah-x-little-corella.html" target="_blank">Galah x Little Corella</a></li>
</ul>
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<br />Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-72063478397497531332016-03-28T11:47:00.002+01:002016-03-28T11:47:41.623+01:00Northern Shoveler x Garganey<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiB03JXKoGorNlf0xg9Qci0Mzii0PYeol-UH98Jr1IkNOfJs2DI3mnrq3Juls4puen_D2Qs6mbsJmUnFFUjJQMqO3MU3tEOhmUHNJovnIpOxz0W-g1q3TwT78j58ZKYYn8P-9g9knOvQFA/s1600/2750.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="224" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiB03JXKoGorNlf0xg9Qci0Mzii0PYeol-UH98Jr1IkNOfJs2DI3mnrq3Juls4puen_D2Qs6mbsJmUnFFUjJQMqO3MU3tEOhmUHNJovnIpOxz0W-g1q3TwT78j58ZKYYn8P-9g9knOvQFA/s320/2750.jpg" width="320" /></a></div>
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<span style="font-size: x-small;">Northern Shoveler x Garganey hybrid, Mai Po (Hong Kong), 16th March 2016 - copyright John Allcock</span></div>
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<span style="font-size: x-small;">(photo ID: 2750)</span></div>
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This interesting bird was consorting with Northern Shovelers and a female Garganey. Note how the vermiculated rear flanks seem to extend to beneath the tail, which may not be expected. A quite similar pattern is shown on the Shoveler x Garganey hybrid illustrated on plate 35 of Sébastien Reeber's new Wildfowl book (Helm, 2015). But the long hanging black-and-white scapulars are a sure sign of Garganey influence. A faint hint of Garganey's pale supercilium also seems to be just visible in front of the eye.<br />
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<span style="font-size: x-small;">Northern Shoveler x Garganey hybrid (same bird as in photo ID 2750 above), Mai Po (Hong Kong), 16th March 2016 </span><br /><span style="font-size: x-small;">- copyright John Allcock</span></div>
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<span style="font-size: x-small;">(photo IDs: 2751-2752)</span></div>
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<span style="font-size: x-small;">Northern Shoveler <i>Anas clypeata</i></span><br />
<span style="font-size: x-small;">Garganey <i>Anas querquedula</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-8527763291141069312016-03-14T22:18:00.000+00:002016-03-14T22:24:23.868+00:00Sedge Warbler x Eurasian Reed-Warbler<div class="separator" style="clear: both; text-align: center;">
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<span style="font-size: x-small;">Sedge Warbler x Eurasian Reed-Warbler hybrid, Lac de Grand-Lieu (Loire-Atlantique, France), 6th September 2015 - copyright Sébastien Reeber</span></div>
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<span style="font-size: x-small;">(photo ID: 2745)</span></div>
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Here is a rare but not unprecedented Old World Warbler hybrid. This individual is clearly intermediate between Sedge Warbler and Reed Warbler. The head/bill profile seems rather Reed Warbler-like to me but the pale supercilium is broader and more extensive than on Reed Warbler, while less clear than on Sedge Warbler. The dark eye-stripe is clearer than you would expect on a Reed Warbler and in some photos you can see a narrow lateral crown stripe (upper border to the supercilium).<br />
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The upperparts colour tone is close to Reed Warbler but this bird has obviously dark centres to the wing feathers with contrasting pale edges - especially obvious on the tertials which are quite wrong for Reed Warbler. Note too the strength of colour on the rump. A hint of dark streaking in the scapulars is visible on one or two of the images, though these are way plainer than they should be on a fresh Sedge Warbler. It seems to have some pale buffy coloiur extending into the collar which I would not expect to see on a Reed Warbler. I'm not a ringer so may be misinterpreting the spread wing shot (below), but I think the way the the tip of the second primary (the outermost long primary) falls well short of the adjacent third primary is closer to Reed Warbler than Sedge Warbler (somebody please correct me if I am wrong about that).<br />
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It is sometimes said that this hybrid may be misidentified as a vagrant Black-browed Reed-Warbler. Some hybrids may look more like that species but I don't think you would make the mistake on this individual. The Sedge Warbler x Reed Warbler hybrid from Finland that featured in <a href="https://britishbirds.co.uk/wp-content/uploads/article_files/V78/V78_N09/V78_N09_P434_437_A103.pdf" target="_blank"><i>British Birds</i> 78: 434-437</a> (Sharrock, 1985) has a more obvious head pattern and looks like it had plainer wings too, so some individuals may perhaps be more like Black-browed Reed-Warbler than this one.<br />
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Probably a tougher ID challenge is separating these from Sedge Warbler x Marsh Warbler hybrids. That's a hybrid that has been proven to occur in Norway - see <a href="http://connection.ebscohost.com/c/articles/48905830/wild-marsh-warbler-sedge-warbler-hybrid-acrocephalus-palustris-a-schoenobaenus-norway-documented-molecular-markers" target="_blank"><i>Journal of Ornithology</i> 151.2: 513</a> (Lifjeld, Marthinsen, Myklebust, Dawson & Johnsen, 2010).<br />
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<span style="font-size: x-small;">Sedge Warbler x Eurasian
Reed-Warbler hybrid (same bird as in photo ID 2745 above), Lac de Grand-Lieu (Loire-Atlantique, France), 6th
September 2015 - copyright Sébastien Reeber</span></div>
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<span style="font-size: x-small;">(photo IDs: 2746-2749)</span></div>
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<span style="font-size: x-small;">Sedge Warbler <i>Acrocephalus schoenobaenus</i></span><br />
<span style="font-size: x-small;">Eurasian Reed-Warbler (Reed Warbler) <i>Acrocephalus scirpaceus</i></span><br />
<span style="font-size: x-small;">Marsh Warbler <i>Acrocephalus palustris</i></span><br />
<span style="font-size: x-small;">Black-browed Reed-Warbler <i>Acrocephalus bistrigiceps</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-9955983414093232112016-03-09T22:04:00.000+00:002017-03-26T20:35:44.694+01:00Black-headed Gull x Mediterranean Gull<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgwxfH8OBFR2XNoeFzxbQ_naYAtA7VlcvVNj5ChMXgKS29j9a8W5_w5YtvmL6Mqs5-AgVhfCMAblV__Pes_ZeyvGmGWl6fmSx8aYSFy3oA1uhWOKw9cJhJbX6zaauTb0wQrqhocWeJZ9FE/s1600/3173.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgwxfH8OBFR2XNoeFzxbQ_naYAtA7VlcvVNj5ChMXgKS29j9a8W5_w5YtvmL6Mqs5-AgVhfCMAblV__Pes_ZeyvGmGWl6fmSx8aYSFy3oA1uhWOKw9cJhJbX6zaauTb0wQrqhocWeJZ9FE/s320/3173.jpg" width="320" /></a></div>
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<span style="font-size: x-small;">third-summer (4th calendar-year) Black-headed Gull x Mediterranean Gull hybrid, Christopher Cadbury Reserve, Upton Warren (Worcestershire, UK), 12th March 2017 - copyright <a href="https://www.flickr.com/photos/johnswildlifephotos/" target="_blank">John Oates</a></span></div>
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<span style="font-size: x-small;">(photo ID: 3173)</span></div>
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A regularly-returning bird in Worcestershire (central England) has allowed us to see how one example of this hybrid progresses from first-year plumage through to adulthood. In the following photo when it was in its first summer (second calendar-year) the jet black head and contrasting white eye-crescents recall Mediterranean Gull but the fine bill is more like that of Black-headed Gull. The shape of the black hood is perhaps intermediate, but certainly doesn't curve up at the rear like it does on Black-headed Gull. The rather thin-looking reddish legs are more like Black-headed Gull.<br />
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<span style="font-size: x-small;">Black-headed Gull x Mediterranean Gull hybrid, Christopher Cadbury Reserve, Upton Warren (Worcestershire, UK), 21st June 2015 - copyright <a href="https://www.flickr.com/photos/johnswildlifephotos/" target="_blank">John Oates</a></span></div>
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<span style="font-size: x-small;">(photo ID: 2736)</span></div>
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John's flight shot of this first-summer bird (below) shows a wing pattern that is somewhat intermediate between the two species, though perhaps closest to Mediterranean Gull. There is too much black on the wing-tip for Black-headed Gull, and the grey inner primaries and outer primary coverts are like Mediterranean Gull, yet the band of brown coverts across the middle of the forewing reminds me more of Black-headed Gull.<br />
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<span style="font-size: x-small;">Black-headed Gull x
Mediterranean Gull hybrid (same bird as in photo ID 2736 above), Christopher Cadbury Reserve, Upton Warren
(Worcestershire, UK), 21st June 2015 - copyright <a href="https://www.flickr.com/photos/johnswildlifephotos/" target="_blank">John Oates</a></span></div>
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<span style="font-size: x-small;">(photo ID: 2737)</span></div>
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John tells us that the same bird had been at Marsh Lane in April 2015. What is presumably the same bird returned to Upton Warren in 2016. As before the blackness of the head recalls Mediterranean Gull, but the shape of the black, with white curving up at the rear, is like on Black-headed Gull. The wing pattern is perhaps closest to Black-headed Gull with black tips to the primaries, thin black line on outer edge of outer primary and white wedge on outer primaries contrasting with greyer inner primaries. But there is more black on the tips, which is apparent on the closed wing too, and a long black spot on the outer web of the second outermost primary.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiINkQFtv053K8tL3NkpvqmnMvrzrXly5_nStfoXu3eVnuCYIWNvjcgU1JMt-sXrVRFflSoMpo3vDRFboEYz5OpZhyphenhyphenPIfwJAm5m3z_8YfOIMSG2z2P__YqYysuJ178X2UvGfyKLB9tCEH0Z/s1600/2760.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiINkQFtv053K8tL3NkpvqmnMvrzrXly5_nStfoXu3eVnuCYIWNvjcgU1JMt-sXrVRFflSoMpo3vDRFboEYz5OpZhyphenhyphenPIfwJAm5m3z_8YfOIMSG2z2P__YqYysuJ178X2UvGfyKLB9tCEH0Z/s320/2760.JPG" width="320" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhMFGgCdQUzfZdlNBiqvaP_ouhyqKYCDkKgX_ptptJLHrs_UhXRFMAOkwOdsyKfwDLcfwD-eL37CfXMVNcniYXBTiyXe471oxSFBYvOxv5On-8aii9vLssl7QAS8k5fdWnIXbVE1kfmnMUW/s1600/2761.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhMFGgCdQUzfZdlNBiqvaP_ouhyqKYCDkKgX_ptptJLHrs_UhXRFMAOkwOdsyKfwDLcfwD-eL37CfXMVNcniYXBTiyXe471oxSFBYvOxv5On-8aii9vLssl7QAS8k5fdWnIXbVE1kfmnMUW/s320/2761.JPG" width="320" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">Black-headed Gull x
Mediterranean Gull hybrid (presumed same bird as in photo IDs 2736-2737 above), Upton Warren
(Worcestershire, UK), 26th March 2016 - copyright <a href="http://www.midlandsbirder.blogspot.co.uk/" target="_blank">Craig Reed</a></span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo IDs: 2759-2761)</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiUq_WUAYBAWrtPUQSyBjFOvaMiv66tp30toGSyZU-7Lr06T-730l6i_SHO_ddsf6oUF8-cbr5OWSz6w0MAq8c4af8wAbyfMD-3vtLZwlp05VdPWtxt5PTJbDYRURzY6GH9Po9v6JyrCA8/s1600/2788.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiUq_WUAYBAWrtPUQSyBjFOvaMiv66tp30toGSyZU-7Lr06T-730l6i_SHO_ddsf6oUF8-cbr5OWSz6w0MAq8c4af8wAbyfMD-3vtLZwlp05VdPWtxt5PTJbDYRURzY6GH9Po9v6JyrCA8/s320/2788.jpg" width="320" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEizG5DNtv9kLxZGQQX3ZPhfigYbnk1yQSaobqNPv3M8CZHjenEB5Ysg3UJrYmSSUNageAItFzxMvD2kXkA5xldJdLxb1_a7ImJ83mMmqfwCg_UV6qmVuhygilucA1o99oKOuRGV7eYSQTw/s1600/2790.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEizG5DNtv9kLxZGQQX3ZPhfigYbnk1yQSaobqNPv3M8CZHjenEB5Ysg3UJrYmSSUNageAItFzxMvD2kXkA5xldJdLxb1_a7ImJ83mMmqfwCg_UV6qmVuhygilucA1o99oKOuRGV7eYSQTw/s320/2790.jpg" width="320" /></a></div>
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<div style="text-align: center;">
<span style="font-size: x-small;">Black-headed
Gull x Mediterranean Gull hybrid</span><span style="font-size: x-small;"><span style="font-size: x-small;"> (presumed same bird as in photo IDs 2736-2737 and </span></span><span style="font-size: x-small;"><span style="font-size: x-small;"><span style="font-size: x-small;">2759-2761 </span>above), </span>Upton
Warren Nature Reserve (Worcestershire, UK), 24th April 2016 - copyright <a href="https://www.flickr.com/photos/johnswildlifephotos/" target="_blank">John Oates</a></span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo IDs: 2788-2791)</span></div>
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It has been seen again in 2017, now in its fourth calendar-year. The wonderful photo at the top of this page was taken at the same time as this next one and both show the distinctive wing-pattern well.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEimf6Ed3sWFFEMr2VzRuKcHg61ieHolNpnC28Cqa3QB1EV1KLE_3zaWRvI_YWNjGwSRP7GTXNOp6c-Cdi1q7d-Tp2PJN9rU7iP0lvXUUyM8KhF-sXYkNN7OfFXxQqxry4G7nXwTdPNGe3c/s1600/3174.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEimf6Ed3sWFFEMr2VzRuKcHg61ieHolNpnC28Cqa3QB1EV1KLE_3zaWRvI_YWNjGwSRP7GTXNOp6c-Cdi1q7d-Tp2PJN9rU7iP0lvXUUyM8KhF-sXYkNN7OfFXxQqxry4G7nXwTdPNGe3c/s320/3174.jpg" width="320" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">Black-headed Gull x Mediterranean Gull hybrid</span><span style="font-size: x-small;"><span style="font-size: x-small;"><span style="font-size: x-small;"> (presumed same bird as in photo IDs 2736-2737, </span></span><span style="font-size: x-small;"><span style="font-size: x-small;"><span style="font-size: x-small;">2759-2761 and 2788-2791 </span>above),</span></span> Christopher Cadbury Reserve, Upton Warren (Worcestershire, UK), 12th March 2017 - copyright <a href="https://www.flickr.com/photos/johnswildlifephotos/" target="_blank">John Oates</a></span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 3174)</span></div>
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There were quite a few reports of this type of hybrid in the UK during the 90s when Mediterranean Gull was spreading in to the UK as a breeding bird. More recently, as Mediterrean Gull becomes more established as a breeding bird, I get the impression that records have become scarcer again, a pattern that is typically seen when a recent coloniser becomes established.<br />
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<span style="font-size: x-small;">Black-headed Gull <i>Chroicocephalus ridibundus</i></span><br />
<span style="font-size: x-small;">Mediterranean Gull <i>Larus melanocephalus</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com3tag:blogger.com,1999:blog-8553998527275861247.post-10365916571573562782016-03-09T20:53:00.003+00:002016-03-09T20:53:57.061+00:00Mute Swan x Black Swan<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgEujIYryDe0oI5GueLhEc4F1h2DwKnloyfBZQImVFuS7W1AVars9c4qgcZ18_A4rObOO4emUNSVorHaWnuiy-hUy3JO66e0uWDdwoKYrI0QHqUOecx8SXAapByur0gkCPWQ_zHgOWGNXs/s1600/2734.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgEujIYryDe0oI5GueLhEc4F1h2DwKnloyfBZQImVFuS7W1AVars9c4qgcZ18_A4rObOO4emUNSVorHaWnuiy-hUy3JO66e0uWDdwoKYrI0QHqUOecx8SXAapByur0gkCPWQ_zHgOWGNXs/s320/2734.jpg" width="320" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">Mute Swan x Black Swan hybrid, West Midlands (UK), 13th January 2012 - copyright <a href="https://www.flickr.com/photos/johnswildlifephotos/" target="_blank">John Oates</a></span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 2734)</span></div>
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John tells us that this first-winter bird was the only surviving offspring of a male Mute Swan & a female Black Swan that nested at Marsh Lane Nature Reserve in 2011. It disappeared shortly after this photo was taken.<br />
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<span style="font-size: x-small;">Mute Swan <i>Cygnus olo</i></span><br />
<span style="font-size: x-small;">Black Swan <i>Cygnus atratus</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com2tag:blogger.com,1999:blog-8553998527275861247.post-37157930967847069632016-03-09T20:48:00.002+00:002016-03-09T20:48:25.284+00:00Chiloe Wigeon x Cape Teal<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPWRffHDeGQnfbPV5m5w55XX9ZXe_Lypl6ICYgXOKXRMiBTYZNBgC_GNp0szZ9Pe4BnA99W3owWXQGJifVLjir-qha2v5TIQj1AEuf0pDBEpnbb6owfTvFsWDOj5RjuNZXBV9o-uXzAw8/s1600/2742.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPWRffHDeGQnfbPV5m5w55XX9ZXe_Lypl6ICYgXOKXRMiBTYZNBgC_GNp0szZ9Pe4BnA99W3owWXQGJifVLjir-qha2v5TIQj1AEuf0pDBEpnbb6owfTvFsWDOj5RjuNZXBV9o-uXzAw8/s320/2742.jpg" width="320" /></a></div>
<div style="text-align: center;">
<span style="font-size: x-small;">probable Chiloe Wigeon x Cape Teal hybrid, Trittiford Park (West Midlands, UK), 3rd March 2016 - copyright <a href="https://twitter.com/JennyRenowden" target="_blank">Jenny Renowden</a></span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 2742)</span></div>
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One parent of this hybrid seems easier to resolve than the other, though arguably is not the only possibility. The reddish pink colour on the bill extends well down the bill suggesting a species with a mainly red bill, and Cape Teal fits that bill. There are other red-billed species, and some Wigeon hybrids are known to show a pinkish bill, but the general appearance of this bird recalls Cape Teal a bit, so that seems a good starting point. The shape of the bill, quite flattened near the tip, also fits Cape Teal, as does the black base of the bill (although the latter could come from the other parent). Cape Teal also shows black along the edge of the bill in the distal third, like this bird, and that for me is the clincher.<br />
<br />
But Cape Teal doesn't have so much black on the nail, it doesn't have the dark patch round the eye (the eye itself would be pale too) and it is a greyer bird overall. A number of people have suggested a Wigeon species as the second parent, and that was my idea too. The dark patch round the eye on an otherwise fairly plain head suggests this, as do the white tertial edges. But which Wigeon? Neither Eurasian nor American Wigeon have so much dark extending above the eye to the top of the head, but Chiloe Wigeon does. The flanks are a bit orangey, which supports Chiloe Wigeon. I wondered if such a plain bird could be produced from a Chiloe Wigeon, that being such a striking species even in female plumage, but Joern has confirmed that it can. And what's more he tells us that there have been examples of Chiloe Wigeon x Cape Teal seen in the UK that have looked much like this.<br />
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Apparently Chiloe Wigeon x White-cheeked Pintail can also look surprisingly similar to this, so it would be helpful to get a view of the wing pattern to be 100% sure, but for now it seems very likely indeed that this is a Chiloe Wigeon x Cape Teal hybrid.<br />
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<span style="font-size: x-small;">Chiloe Wigeon <i>Anas sibilatrix</i></span><br />
<span style="font-size: x-small;">Cape Teal <i>Anas capensis</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com1tag:blogger.com,1999:blog-8553998527275861247.post-10041139873054476062016-02-21T23:37:00.000+00:002016-02-21T23:37:02.702+00:00Recent updates<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjVzxzWEiK1VpRP6M5h-QTNl6Wu-KCTHOGXeSnrXZrtQvM52RkArwAkL3P-QTyucb9umpB0WxBlzcJVWCxdaPN21mKENMKviJd6fwlWsIKXJ03YWsQzgGsO79jP0TyLE7AFv9UnSf9rA4s/s1600/2594+Redchat1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjVzxzWEiK1VpRP6M5h-QTNl6Wu-KCTHOGXeSnrXZrtQvM52RkArwAkL3P-QTyucb9umpB0WxBlzcJVWCxdaPN21mKENMKviJd6fwlWsIKXJ03YWsQzgGsO79jP0TyLE7AFv9UnSf9rA4s/s320/2594+Redchat1.jpg" width="320" /></a></div>
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<span style="font-size: x-small;">proven Common Redstart x Whinchat hybrid, Lista Bird Observatory (Vest-Agder, Norway), 18th September 2013 - copyright © Jonas Langbråten</span></div>
<div style="text-align: center;">
<span style="font-size: x-small;">(photo ID: 2594)</span></div>
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<br />
Here's another of our regular posts letting you know what pages have been updated in the project recently. As always, a big thanks to all who
have contributed photos and/or insights, and if you haven't done yet
or have more to offer then please get in touch. You can comment on any thread if you have
anything to say about the hybrids or topics covered, and if you have any
photos you would be willing for us to use, please let us know (e.g. by <a href="mailto:bird.hybrids@gmail.com" target="_blank">emailing us</a>).<br />
<br />
The recent updates are summarised below but remember you can find an <b>index list linking you to ALL the bird hybrids featured </b>so far here:<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/01/index-of-hybrid-birds.html" target="_blank">Index of bird hybrids</a></li>
</ul>
And an index list of all the bird hybrid topics covered so far here:<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/01/index-of-bird-hybrid-topics.html" target="_blank">Index of bird hybrid topics</a></li>
</ul>
<br />
<br />
<br />
So, the <b>recent updates </b>are:
<br />
<br />
<br />
New Bird Hybrid pages added for:
<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/01/mallard-x-common-eider.html" target="_blank">Mallard x Eider</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/02/white-cheeked-pintail-x-chestnut-teal.html" target="_blank">White-cheeked Pintail x Chestnut Teal</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/01/yellow-billed-speckled-teal-x-marbled.html" target="_blank">Yellow-billed (Speckled) Teal x Marbled Teal</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/02/herring-gull-x-caspian-gull.html" target="_blank">Herring Gull x Caspian Gull</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/01/herring-gull-x-glaucous-gull.html" target="_blank">Herring Gull x Glaucous Gull</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/02/yellow-legged-gull-intergrades.html" target="_blank">Yellow-legged Gull intergrades</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/01/common-redstart-x-whinchat.html" target="_blank">Common Redstart x Whinchat</a></li>
</ul>
<br />
New photos added to:
<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/greater-white-fronted-goose-x-bar.html" target="_blank">Greater White-fronted Goose x Bar-headed Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/greylag-goose-x-canada-goose.html" target="_blank">Greylag Goose x Canada Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/snow-goose-x-cackling-goose.html" target="_blank">Snow Goose x Cackling Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/emperor-goose-x-barnacle-goose.html" target="_blank">Emperor Goose x Barnacle Goose</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/02/ruddy-shelduck-x-common-shelduck.html" target="_blank">Ruddy Shelduck x Common Shelduck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2016/01/falcated-duck-x-baikal-teal.html" target="_blank">Falcated Duck x Baikal Teal</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/mallard-x-northern-shoveler.html" target="_blank">Mallard x Northern Shoveler</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/mallard-x-red-crested-pochard.html" target="_blank">Mallard x Red-crested Pochard</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/06/red-crested-pochard-x-common-pochard.html" target="_blank">Red-crested Pochard x Common Pochard</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/common-pochard-x-ferruginous-duck.html" target="_blank">Common Pochard x Ferruginous Duck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/common-pochard-x-tufted-duck.html" target="_blank">Common Pochard x Tufted Duck</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/04/ring-necked-duck-x-lesser-scaup.html" target="_blank">Ring-necked Duck x Lesser Scaup</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/06/herring-gull-x-lesser-black-backed-gull.html" target="_blank">Herring Gull x Lesser Black-backed Gull</a> (also sound recording)</li>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/06/carrion-crow-x-hooded-crow.html" target="_blank">Carrion Crow x Hooded Crow</a></li>
<li><a href="http://birdhybrids.blogspot.co.uk/2015/01/intersex-birds-and-their-confusion-with.html" target="_blank">Intersex birds (and their confusion with hybrids)</a></li>
</ul>
<br />
Text updated in:
<br />
<ul>
<li><a href="http://birdhybrids.blogspot.co.uk/2014/02/lesser-white-fronted-goose-x-rosss-goose.html" target="_blank">Lesser White-fronted Goose x Ross's Goose</a></li>
</ul>
<br />
<br />
Don't forget you can now <b>follow us on Twitter </b>at <a href="https://twitter.com/BirdHybrids" target="_blank">@BirdHybrids</a><br />
<br />
Enjoy browsing - and please do <a href="http://birdhybrids.blogspot.co.uk/2014/01/how-to-contribute.html" target="_blank">contribute</a> where you can!<br />
<br />Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0tag:blogger.com,1999:blog-8553998527275861247.post-55091141920248420462016-02-21T19:51:00.000+00:002016-02-21T19:51:15.790+00:00White-cheeked Pintail x Chestnut Teal<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj03UfiepbGGR6IY1o_yrjfigU-WNTssknkOPC7Kwe2dfwYrdYwNSwKqJP_coWpov6FnbJ81u7svj8twop6uc3mBi5wvfpXsHlaZNiLyVAgpiWroUaRS8XdTWBGZuM8e17wsQNES1-0TFU/s1600/2700+hybrid+duck+2012+11+03+Victoria+Park_3445.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="212" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj03UfiepbGGR6IY1o_yrjfigU-WNTssknkOPC7Kwe2dfwYrdYwNSwKqJP_coWpov6FnbJ81u7svj8twop6uc3mBi5wvfpXsHlaZNiLyVAgpiWroUaRS8XdTWBGZuM8e17wsQNES1-0TFU/s320/2700+hybrid+duck+2012+11+03+Victoria+Park_3445.jpg" width="320" /></a></div>
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<span style="font-size: x-small;">possible White-cheeked Pintail x Chestnut Teal hybrid, Victoria Park (Surrey, UK), 3rd November 2012 - copyright <a href="http://www.birdbrainuk.com/BBUK/Welcome.html" target="_blank">David Darrell-Lambert</a></span></div>
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<span style="font-size: x-small;">(photo ID: 2700)</span></div>
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The identification of this bird is not easy and so far we have not reached a confident conclusion. Provisionally I've labelled it as possible White-cheeked Pintail x Chestnut Teal as of all the ideas that have been presented so far this one seems to me to be the best, but we are by no means sure.<br />
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The rather long pointed tail with white sides suggests White-cheeked Pintail to me, though there are other species with relatively long tails and other species with white edges to the tail, so this is not a certainty. The pale cheeks fit with that too, though of course there are many other hybrids that show pale cheeks, so this is not a strong supporting factor. The brown body plumage suggests to me one of the ducks that lack bright body colours, which again fits White-cheeked Pintail (among other species), but of course we do not know that this bird is fully adult, or if it has completed its post-eclipse moult, or indeed if it is intersex. So White-cheeked Pintail is a tentative starting point for me, not a conclusion.<br />
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If right, then the second parent must have black under the tail and a green head. Probably a wholly green head as the green looks quite extensive, though hybrids involving Wigeon or Teal have also been suggested. We have seen <a href="http://birdhybrids.blogspot.co.uk/2014/03/wood-duck-x-white-cheeked-pintail.html" target="_blank">Wood Duck x White-cheeked Pintail hybrids</a> recently and these have looked quite different, but one of my first ideas was Mallard x White-cheeked Pintail. But this idea did not convince me, or others I asked. Mallard hybrids usually show some hint of the curved central tail feathers, whereas this shows nothing of that. A Chiloe Wigeon x White-cheeked Pintail hybrid looked very different with, among other things, very different pattern to the tertials and scapulars.<br />
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It was Joern who first suggested White-cheeked Pintail x Chestnut Teal, though he has been clear that he is not sure and some things seem wrong for this ID. But the tertials and scapulars of Chestnut Teal are rather close to this bird, and the pattern of the flanks (if not the colour) could easily lead to a pattern like the one shown by this bird. And it has a green head and black vent of course, and the bill is not dissimilar either. But should we not expect to see chestnut colour on the body if Chestnut Teal was involved? Certainly some of their hybrids show chestnut on the body. Well, there's a photo of a Cape Teal x Chestnut Teal hybrid in one of the Gillham books (<i>Hybrid Ducks: the 5th contribution towards an inventory</i>, plate 68) and that shows only a hint of chestnut on its breast, not at all on the flanks - so rather like this bird in that respect. We might have expected to see a redder eye on a Chestnut Teal hybrid, but at least it is not darker than that of White-cheeked Pintail (it's actually quite similar to White-cheeked Pintail's eye colour I think).<br />
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We've considered other ideas too, involving Teal, Wigeon and even Black Duck, but for me at this point White-cheeked Pintail x Chestnut Teal is the best fit. That doesn't mean it's right though, so please get in touch if you can help clear this mystery up!<br />
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<span style="font-size: x-small;">possible White-cheeked
Pintail x Chestnut Teal hybrid (same bird as in photo ID 2700 above), Victoria Park (Surrey, UK), 3rd November
2012 - copyright <a href="http://www.birdbrainuk.com/BBUK/Welcome.html" target="_blank">David Darrell-Lambert</a></span></div>
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<span style="font-size: x-small;">(photo IDs: 2701-2702)</span></div>
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<span style="font-size: x-small;">White-cheeked Pintail <i>Anas bahamensis</i></span><br />
<span style="font-size: x-small;">Chestnut Teal <i>Anas castanea</i></span>Dave Appletonhttp://www.blogger.com/profile/15077880196249359409noreply@blogger.com0