The black-throated green warbler (Setophaga virens) is a small songbird of the New World warbler family.
Black-throated green warblers forage actively in vegetation, and they sometimes hover (gleaning), or catch insects in flight (hawking). Insects are the main constituents of these birds' diets, although berries will occasionally be consumed.
The song of this bird is a buzzed zee-zee-zee-zooo-zeet or zoo-zee-zoo-zoo-zeet. The call is a sharp tsip.
This bird is vulnerable to nest parasitism by the brown-headed cowbird.