Brown-headed cowbird: These drifters are called brood parasites because they trick other species into raising their offspring.
Brown-headed cowbird: These drifters are called brood parasites because they trick other species into raising their offspring. US Fish and Wildlife US Fish and Wildlife
Brown-headed cowbird: These drifters are called brood parasites because they trick other species into raising their offspring. US Fish and Wildlife US Fish and Wildlife

Inside NC Science: Cowbirds are feathered freeloaders

June 14, 2015 03:00 AM