Townsend's warbler, Dendroica townsendi, is a small bird that breeds in the northwestern United States, western Canada, and Alaska. It migrates to warmer climates in California, Mexico, and Central America for winter. Townsend's warbler is rare migrant through Utah in spring and fall, but it does not spend much time in the state during its occasional visits.
Townsend's warbler prefers coniferous forest habitat. Nests are built above the ground in conifer trees; the average clutch contains three to five eggs.
This species is active during the day. Its diet is composed primarily of insects and spiders.