The brown-headed cowbird (Molothrus ater) in North America is an obligate or generalist brood parasite of over 200 songbirds. Numerous studies show reproductive losses for individual host species (e.g ...

Brood parasitic birds lay their eggs in the nests of others, sparing themselves the expense of rearing their own young. The resulting coevolutionary arms race includes sophisticated defenses by ...

Brown-headed cowbirds (Molothrus ater) are native to North America and commonly referred to as simply cowbirds. They also ...

The Brown-headed cowbird is one of two cowbird species in North America. Both species are brood parasites - they lay their eggs in the nests of other birds. Brown-headed cowbirds are native to ...

The common brown-headed cowbird is the most widespread brood parasite in North America. Poly­typic. Length 7.5". A smallish, compact and stocky blackbird with a short and thick-based bill ...

There are about 750 species of parasitic birds worldwide who lay their eggs in other bird’s nests. The brown-headed cowbird is the only one found in our region. I think most people would ...