Description of the Black-throated Blue Warbler
Males have dark blue upperparts, head, and neck, with a black face, throat, and flanks, and white underparts. They have dark wings with a white patch visible on the folded wing.
Females are largely grayish-olive with a pale supercilium and a pale arc under the eye. They also have a white patch on the wing.
Seasonal change in appearance
Immatures are similar to adults, but duller, and may lack the white wing patch.
Black-throated Blue Warblers inhabit deciduous forests or mixed forests, but in migration they also occur in shrubby areas.
Black-throated Blue Warblers eat insects, but also nectar.
Black-throated Blue Warblers forage slowly in understory or low in trees.
Black-throated Blue Warblers breed in southeastern Canada, the northeastern U.S., and the Appalachians. They winter in the Greater Antilles and Central America. The population is stable to increasing.
Bent Life History
Visit the Bent Life History for extensive additional information on the Black-throated Blue Warbler.
Pairs are often faithful from one season to the next, though males can have more than one mate.
Black-throated Blue Warblers are often very tame.
The song is a long series of rising buzzes. A sharp flight call is also given.