Alternate adult male has mostly yellow face, with a large chestnut auricular patch, blackish crown, thin black bill, yellow underparts with thick black streaks, greenish back with dark streaks, greenish wings with white shoulder panel, yellow rump, and buffy-white undertail coverts. Female is much duller and lacks chestnut on the face; dingy-yellow underparts are streaked with gray, face is mostly yellow with dusky auriculars and crown; wings lack white panel. Immature is very drab, similar to Yellow-rumped Warbler, but note very thin bill, diffuse streaks on gray breast, greenish rump and green-edged flight feathers, and narrow pale wing bars. In flight, all plumages show white spots in tail corners.
Length: 12 (cm) Wingspan: 21 (cm)
Thin, high phrases, repeated seet notes. Call is a short, high-pitched note.
Breeds in spruce and coniferous forests. During migration and winter, occurs in a wide variety of wooded areas.
Nest is a cup of twigs and moss on a conifer branch. In migration and winter, sometimes joins flocks with other warblers.
Gleans foliage for a variety of insects.
Expanded Life History
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