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 ...

In late spring and early summer, birds are busy building nests and raising their young. However, one exception is the freeloading Brown-headed Cowbird, laying its eggs in the nests of other birds, a ...

Female brown-headed cowbird (Molothrus ater) singing at Jamaica Bay Wildlife Refuge near New York City. (Credit: Rhododendrites / CC BY-SA 4.0) Brown-headed cowbirds, Molothrus ater, are fascinating ...

A chuckling gurgle and a squeaky whistle announce the presence of one of nature's oddest and most maligned birds, the brown-headed cowbird. They're a native species but have an alien-like habit: They ...

Many species of birds get reputations of various sorts. One species that gets a bad rap, through no fault of its own, is the brown-headed cowbird. The female cowbird lays its eggs in the nests of ...

Over a door in the quiet yard of a historic home in Newburyport, a drama is unfolding. A house finch couple built a nest, the female laid her eggs, and then a brown-headed cowbird showed up. Since ...

Q. Do brown-headed cowbirds select the nest of another bird to lay eggs in based on which species raised them as a nestling? In other words, if a cowbird is raised as a chick by a red-winged blackbird ...

Brown-headed Cowbirds (Molothrus ater) are brood parasites that lay their eggs in the nests of host species. Cowbird chicks typically grow up in mixed broods consisting of one or more cowbird chicks ...

There is an azure blue egg hidden in a hanging basket of ferns on our front porch. It belongs to a female house finch that just about caromed off my forehead last week when I tipped a watering can ...

It’s that time of year here in our neck of Pennsylvania when it’s prime nesting season for our feathered friends. Case in point: Our home in Northbrook is now surrounded by nesting birds. These ...

FORT SILL, Okla. -- The brown-headed cowbird is one of those native birds that wasn't raised with good manners. And that's a problem for the black-capped vireo. You see, the vireo is an endangered ...