Cassin's Kingbird, partially white (Tyrannus vociferans), Montezuma Pass, Cochise County

This partially white Cassin's Kingbird was found and photographed by Diana Doyle on 04 May 2019

Conditions causing abnormal white feathers, such as leucism and progressive graying, are relatively rare in flycatchers and apparently have not previously been reported in this species, though it has been in other species of Tyrannus. This individual shows a mixture of white and normal feathers in the wings and on the head.

Identification from Western Kingbird is tricky as this individual shows plumage abnormalities but the lack of white in the outer tail feathers and darker gray help to identify it.

04 May 2019, photo by Diana Doyle

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