It is estimated that the cowbird has parasitized more than 220 different bird species across North America. Because cowbird eggs require a shorter incubation period—and female cowbirds can lay ...

But, many birds will accept the cowbird egg as their own and raise the cowbird young as if it were their own baby bird. The practice of laying your eggs in another bird’s nest is called ...

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 ...

It has long been assumed that cowbird parasitism can result in changes in songbird communities, but surprisingly the De Groot and Smith (2001) study is the first to assess whether this brood parasite ...

Numerous studies show reproductive losses for individual host species, and therefore it has long been assumed that cowbird parasitism can result in changes in songbird communities. Surprisingly the De ...

Humorist, author and illustrator Matt Kracht of "A Dumb Birds Field Guide to the Worst Birds Ever" ranks a handful of common ...

Bird flu is here to stay. The H5N1 avian influenza is proliferating among U.S. cows and there are now two strains circulating among mammals and birds. Though there are only 68 confirmed cases in ...