Brown-headed cowbirds are brood parasites that lay eggs in other birds' nests. Learn how they choose hosts and the 'Mafia ...

Many biologists have a love/hate relationship with brown-headed cowbirds. We love their ecological and behavioral ingenuity, but we hate the impact they have on a variety of native nesting song birds.

Q. Do brown-headed cowbirds pick the nest of another bird to lay eggs in based on which kind of bird raised them as a ...

Brown-headed cowbirds are generalist brood parasites, laying their eggs in the nests of many other bird species and letting the host parents raise their young. A new study seeks to understand the ...

Brown-headed cowbirds are not what one would call nice. The black birds with brown heads are known as brood parasites for their habit of laying eggs in the active nests of songbirds. Because their ...

While the brown-headed cowbird is native to North America, it is a much worse villain than the European starling — an invasive species that has expanded like wildfire in the U.S. since it was ...

Nature has so many different ways to accomplish just one task – reproduction. At this time of year, it seems that everywhere I look I see baby birds. It’s a blizzard of baby birds being fed by their ...

DEAR JOAN: A California towhee has built a nest in our jasmine bush. She laid three eggs about one week ago. Now we look in the nest and there is a fourth egg and it sure looks like a cowbird egg. We ...

CHAMPAIGN, Ill. — Brown-headed cowbirds are generalist brood parasites, laying their eggs in the nests of many other bird species and letting the host parents raise their young. A new study seeks to ...

Nature has so many different ways to accomplish just one task – reproduction. At this time of year, it seems that everywhere I look I see baby birds. It’s a blizzard of baby birds being fed by their ...