Apparent gynandromorph Black-throated Blue Warbler in Jamaica

[Ryan Terrill]

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Hi Everyone-

On 25 Mar, Jill Gautreaux and I captured this SY Black-throated Blue Warbler in the Blue Mountains in Jamaica. It appears to be a bilateral gynandromorph, with the left side showing mostly female characteristics, and the right side showing mostly male. Especially note the body color, white in R5, the white at the base of the primaries, and black on the side of the chest. There are some parts that don't line up exactly, most notably the lesser secondary coverts (blue on the left), and some black mottling on the throat on the left side.

At any rate, it is a pretty cool bird. Here are the photos.

http://www.flickr.com/photos/21276444@N00/sets/72157623728985587/

Ryan Terrill

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