| Chestnut-sided Warbler Identification Tips |
| (Credit: U. S. Geological Survey) |
| General
Information - Small, active, insect-eating bird - Yellow wing bars - Thin, pointed bill - Black legs Adult male alternate - Yellow crown - White patch on side of neck surrounded by thick black eyeline and black malar streak - Black malar streak connects with thick rusty stripe on side - White underparts - Black back with white streaks - Female in alternate plumage similar to male but duller with reduced rust on sides Basic and immature - Green crown, nape and back - Gray face and sides of breast - White eye ring - White belly and undertail coverts - Some rust may be present on sides Similar species In alternate plumage, the only other warbler with rusty sides is the Bay-breasted Warbler but it has a brown, not yellow, crown and has a dark throat. In basic (fall) and immature plumages the yellow wing bars can also be found in the Golden-winged Warbler but this species has a dark throat and cheek patch. The white eye ring, unstreaked underparts, and gray face are also good field marks. |
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