Chestnut-sided Warbler

Breeding adults have a yellowish crown, black eye line and mustache mark, dark wings with two pale-yellow wing-bars, chestnut on the sides, white underparts, and a streaked back. Immature (first-fall) birds are much plainer, with a greenish crown and back, gray underparts, and a prominent white eye-ring. Fall adults are similar to immatures but usually show some chestnut on the sides.


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