Yellow-rumped (Audubon's) Warbler

Description:

In summers, males of both forms have streaked backs of black on slate blue, white wing patches, a streaked breast, and conspicuous yellow patches on the crown, flank, and rump. Audubon's Warbler also sports a yellow throat patch, while the Myrtle Warbler has a white throat and eye stripe, and a contrasting black cheek patch. Females of both forms are more dull, with brown streaking front and back, but still have noticeable yellow rumps. Goldman's Warbler, of Guatemala, resembles Audubon's but has a white lower border to the yellow throat and otherwise darker plumage; males replace the slate blue of Audubon's with black. These birds are primarily insectivorous, although when bugs are scarce, the Myrtle Warbler also enjoys eating fruit, and the wax-myrtle berries which gave it its name. They often flit, flycatcher-like, out from their perches in short loops, in search of insects. They nest in coniferous and mixed woodlands, and lay 4–5 eggs in a cup-shaped nest. The Yellow-rumped has a trill-like song of 4–7 syllables (tyew-tyew-tyew-tyew,tew-tew-tew) and an occasional check or chip call note.

Habitat:

small willow grove