tag:blogger.com,1999:blog-8553998527275861247.post1783508036815687055..comments2024-03-14T23:49:30.509+00:00Comments on Bird Hybrids: Northern Flicker intergradesBird Hybridshttp://www.blogger.com/profile/12029864289171258900noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-8553998527275861247.post-5480340112537858522016-10-19T19:17:47.892+01:002016-10-19T19:17:47.892+01:00Thanks ifny - yes, the Auk paper about this is int...Thanks ifny - yes, the Auk paper about this is interesting reading. If I understand correctly most of the individuals in the study (which was outside of the main hybridisation zone) showed blocks of flight feathers showing red. Many of the birds above show other intermediate features as well as the shaft colour, so I think they are still hybrids, but this study highlights the need to be cautious. I wonder if the reverse is also true - if there are dietary variations between east and west causing the western birds to show red shafts, in which case abnormalities in their diet may result in yellow shafts?Dave Appletonhttps://www.blogger.com/profile/15077880196249359409noreply@blogger.comtag:blogger.com,1999:blog-8553998527275861247.post-71407737974225220502016-10-15T20:48:13.134+01:002016-10-15T20:48:13.134+01:00Diet is now a likely candidate for red feathers in...Diet is now a likely candidate for red feathers in yellow shafted flickers: http://www.cbc.ca/radio/quirks/quirks-quarks-for-october-15-2016-1.3803790/the-mystery-of-the-red-feather-1.3803880ifnyhttps://www.blogger.com/profile/13252424443975024695noreply@blogger.com