Nesting in deciduous forest from western Ontario across the northern Great Lakes to the Maritime provinces, New England, and south along the Appalachians, the Black-throated Blue Warbler winters primarily in the West Indies. The adult male is unmistakable, with blue crown and back, white underparts, black face, throat, and flanks, and prominent white patch at the base of the primaries visible on the folded wing as well as in flight. Although much plainer the adult female is no less distinctive: overall grayish-brown, white eyebrow, gray cheek, and small white primary patch. Immatures resemble adult females but often show no white in the wing.

First Sighting of Year

Friday, September 1, 2017 Edgecomb ME United States
Saturday, May 5, 2018 274€“278 Island Dr Newbury MA United States
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