Brown-headed Cowbird

Molothrus ater

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About the Brown-headed Cowbird

A small blackbird with a rich brown head, famous for laying its eggs in the nests of other bird species.

Fun Facts

  • Brown-headed Cowbirds do not build their own nests.
  • Females may lay eggs in the nests of more than 200 different bird species.
  • Cowbird chicks often grow quickly and compete with the host's young for food.
  • They originally followed roaming bison across the Great Plains, feeding on insects stirred up by the herds.