There is faint streaking, occasionally visible, on the lower flanks of the "Cassin's Sparrow". Both sexes look alike, colored to fit in with their arid surroundings. These are very secretive birds.
The "Cassin's Sparrow" breeds in the Great Plains of Kansas, Nebraska and Oklahoma.
Calls or song.
The male rises up from the grass to trill a melodious song, then drops back into the shrub as his tune ends. Rival males hold song duels during courtship, singing all night long.
Population and distribution.
After breeding season, these birds migrate southwestward to the deserts of Arizona and New Mexico.
The "Cassin's Sparrow" makes a tunnel-like cup in the tall grass, in which the female lays three or four white eggs.
Birds in the same Family: