Yellow-rumped Warbler

Description:

In summer, both sexes are a smart gray with flashes of white in the wings and yellow on the face, sides, and rump. Males are very strikingly shaded; females are duller and may show some brown. Winter birds are paler brown, with bright yellow rump and usually some yellow on the sides.

Habitat:

Thorn scrub in the Sonoran Desert, southwest Arizona.