The Tennessee Warbler is 11.5 cm (4.5 in) long, has a 19.69 cm (7.75 in) wingspan and weighs roughly 10 g. The breeding male has olive back, shoulders, rump and vent. The flight feathers are brownish-black. It has a slate gray neck, crown and eyeline. The underside is a gray-white. The female is similar to the male, but is much duller and has a greener tinge to the underside. This bird has long wings, short tail and a thin, pointy bill. Juveniles and first-year birds are quite similar to the female. The bird can be confused with the Red-eyed Vireo, which is larger, moves more deliberately and sings constantly.


Habitat and Distribution

It breeds from the Adirondack Mountains in New York through northern Vermont, New Hampshire, and Maine north and west throughout much of Canada. Also found breeding in northeast Minnesota and northern Upper Peninsula of Michigan. It is migratory, wintering in southern Central America and northern Colombia and Venezuela,as well as Ecuador. This bird was named from a specimen collected in Tennessee where it may appear during migration.


Feeding

They feed mainly on insects and prefer the Spruce Budworm. It also likes flower nectar, fruit and some seeds. Like most other Warblers,it is nervous and quick while foraging. It creeps along branches and is found at all levels.


Breeding

The Tennessee Warblers make a cup shaped nest made of dried grasses and moss lined with finer grasses, stems and hair. The nest can be placed on the ground or above a bog in moss or in the base of a shrub. The nest is built by the female and she lays 4 to 7 white eggs with brown splotches on them.


Calls and Songs

Their song has three parts, which can be repeated endlessly:tecky tecky tecky tick tick tick tick tyew!tyew!tyew!tyew! The call is a sharp tyick. The flight call is a buzzy zzee.