Dark-eyed Junco intergrade ('Grey-headed Junco' x 'Red-backed Junco'), Flagstaff (Arizona, USA), 10th December 2002 - copyright Christian Nunes
(photo ID: 2327)
Christian tells us that the Juncos on the on the Kaibab Plateu of northern Arizona are a hybrid swarm of Red-backed x Grey-headed. For this bird he notes a standard Red-backed Junco plumage but a mostly pink bill.
(See also: Slate-coloured Junco x Oregon Junco, Oregon Junco x Pink-sided Junco, Pink-sided Junco x White-winged Junco, Pink-sided Junco x Grey-headed Junco)
Dark-eyed Junco Junco hyemalis
'Grey-headed Junco' Junco hyemalis caniceps-group
'Red-backed Junco' Junco hyemalis dorsalis