Males greenish black with brown head. Females grayish brown. Bills are black.
Voice: high-pitched; female chatters.
Range: Breeds throughout all of the United States, except Florida, and into Canada
Cowbirds do not raise their young. They steal an egg from another bird's nest and replace
it with one of their own. The cowbird egg usually hatches first and the young cowbird is
usually so much larger that the other nestlings are crowded out. They are a pest which is
quickly growing in destructiveness at the expense of songbirds.