Description of the Black-throated Blue Warbler

BREEDING MALE

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.

black-throated blue warbler

Female

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.

 

black-throated blue warbler

Seasonal change in appearance

None.

Juvenile

Immatures are similar to adults, but duller, and may lack the white wing patch.

Habitat

Black-throated Blue Warblers inhabit deciduous forests or mixed forests, but in migration they also occur in shrubby areas.

Diet

Black-throated Blue Warblers eat insects, but also nectar.

Behavior

Black-throated Blue Warblers forage slowly in understory or low in trees.

Range

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.

More information:

Bent Life History

Visit the Bent Life History for extensive additional information on the Black-throated Blue Warbler.

Fun Facts

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.

Vocalizations

The song is a long series of rising buzzes. A sharp flight call is also given.

Nesting

The Black-throated Blue Warbler’s nest is a cup of bark strips and fibers lined with finer materials. It is placed in a fork of a thick shrub.

Number: 4.
Color: Whitish with darker markings.

Incubation and fledging:
The young hatch at about 12-13 days and fledge at about 8-10 days, though remaining dependent on the adults for some time.