do cowbirds ever lay eggs in their own nest
Cowbirds are brood parasites. Cuckoos are the best known of these kinds of birds, but others include indigobirds in Africa and the black-headed duck. These are all birds that lay their eggs in other birdsâ nests. And some, like cowbirds and cuckoos, destroy eggs already in those nests, giving these tales an especially gruesome twist.