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Eastern Palm Warblers are very yellow in
all plumages, while western birds are duller.
The supercilium (eyebrow) is yellow, while in western birds the face is much browner, and the supercilium is buff-colored. The entire breast and belly are yellow in eastern birds, with no contrast between the belly and the undertail coverts. Western Palm Warblers have buff bellies (which can be washed with yellow in fresh plumage) which always contrast with the brighter yellow undertail coverts. |
This bird was a hatching-year (or juvenile) bird, based on the incomplete ossification of the skull. It had no chestnut on the crown, and a fairly short wing, suggesting that it might be a young female |
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