<i>Molothrus ater</i> Length: 7.5" <p> The Brown-headed Cowbird ranges throughout North America. It seems that I see more of them in the East Bay (Cesar Chavez Park in Berkeley) than I did a few years ago. Either I am recognizing them more, or their population has increased. </p> <p> The Brown-headed Cowbird lays its eggs in the nest of other small perching birds. </p>