Breeding male - ML64800391 — Breeding male © Keenan Yakola eBird S29656745 Macaulay Library ML 63708031

Breeding female - ML297045221 — Breeding female © Ian Davies

Breeding female - ML297044801 — Breeding female © Ian Davies

Nonbreeding female/immature - ML297044961 — Nonbreeding female/immature © Peter Hawrylyshyn

Nonbreeding male - ML64800371 — Nonbreeding male © Ian Davies

Nonbreeding female/immature - ML64800421 — Nonbreeding female/immature © Alix d'Entremont

Nonbreeding female/immature - ML64800431 — Nonbreeding female/immature © ryan doherty

Breeding male - ML64800381 — Breeding male © Shailesh Pinto

Breeding male - ML64800401 — Breeding male © Daniel Jauvin

Bay-breasted Warbler Setophaga castanea

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Identification

Breeding males are distinctive with dark reddish-brown cap and sides, along with buffy nape. Two bold white wingbars. Females and fall birds are duller; most show at least some chestnut coloring on sides. Dullest birds are similar to Blackpoll and Pine Warblers; look for streaks on back, well-defined wingbars, and cleaner greenish-yellow head and neck. Prefers conifers during migration, but can be found in any woodland. Breeds in the boreal forest. In most of U.S. , only seen during migration. Winters in Central and South America. Listen carefully for extremely high-pitched, squeaky-wheel song, similar to a fast Black-and-white Warbler.