Grey-crowned Ground Sparrow

The grey-crowned ground sparrow is about 18 cm (7.1 in) long The sexes have the same plumage. Adults have a mostly black head with a gray stripe on the crown, white patches in front of the eye and on the ear coverts, a broken white eye-ring, and a thin yellow supercilium that continues as a large yellow patch behind the ear coverts and on the sides of the neck. Their upperparts, wings, and tail are brownish and sometimes have an olive cast on the wings. Their throat is black and their breast white with a small black patch in its center. Voice: One song of the male grey-crowned ground sparrow is a "ringing, slightly metallic seet!–teet-teea-teu'teu'teu'teu". Another is "an agitated buzzy scold, seee-seeee-zeeee'zeeee'zeeeee'zeeeeu'zeeeeu...". Pairs sometimes sing in duet. Both sexes make chip and seet calls. Males sing solo only during the breeding season; duets and calls are made year-round.