Cowbird mothers abandon their eggs in the nests of other bird species, but the chicks somehow manage to find their flock and ...

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 ...

A single shift of a parasite from one host species to another can trigger catastrophic infectious disease outbreaks. Despite ...

Since some brood parasites rely on several different bird species as foster parents, more than a sixth of all species in the avian world care for chicks that aren’t their own at some point.

In today’s Health Alert, a ban on relocating birds in Michigan due to the bird flu outbreak is raising concerns about Swimmer ...