When a female cowbird is ready to have a baby, she’ll stake out another bird’s nest, wait until the coast is clear, then slip ...

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… ...

So she decides to toss it out of the nest. Little does she know, mama cowbird has been watching. A brown speckled cowbird egg in with an American robin’s eggs. (Courtesy of Mark Hauber) “It monitors ...

These crafty birds spy on other songbird species, looking for chances to drop an egg into their nests. Subscribe. Log In. Minnesota News You Can Use. Subscribe. The Latest. 13 minutes ago.

Egg-laying cowbirds still strike, and Hoover had for years left the cowbird eggs alone. In 2002, he and other researchers removed cowbird eggs. Nest vandalism suddenly increased.

The birds seem to be responding to variables that matter in nature. Cowbird eggs, for instance, are noticeably wider than their own, so robins may have evolved a canny sense of when width is off.

Cowbirds are also known to push other eggs out of the nest, and their oversized chicks often outcompete the host's chicks. The National Audubon Society estimates the cowbird has parasitized more ...

In the spring, robins living on an Illinois tree farm sat on some unusual eggs. Alongside the customary brilliant blue ovoids they had laid were some unusually shaped objects. Although they had the… ...

Learn interesting egg facts, including what bird lays pink eggs, what bird lays eggs in another bird's nest and why bird eggs aren't round. The post 17 Extraordinary Bird Egg Facts appeared first ...

RIDGELY — During the Adkins scheduled bird walk on May 28, I found an empty Brown-headed Cowbird egg on the ground with a hole in it. I speculated that the ...

Cowbirds are common in the area, and in winter they can be seen in large flocks, together with other kinds of blackbirds. The full name is brown-headed cowbird to distinguish ...