Add Yahoo as a preferred source to see more of our stories on Google. Male Greater-sage grouse (sage hen) (Centrocercus urophasianus) calls for the ladies from his snow-covered sagebrush lek with his ...

Across backyards, campuses, rainforests and even aquariums, birds are changing in ways that are startling veteran researchers. From hybrid jays that should not exist to songbirds that reshape their ...

When we think about birds, we often picture their colorful plumage: the iridescence of a peacock's tail or the electric blue flash of a kingfisher. Or we might consider how they use voices, from the ...

The poster joked, "I heard no difference between the sound of the bird and the washing machine at all," and once you hear the ...

No birds alive today have teeth. But that wasn't always the case; many early fossil birds had beaks full of sharp, tiny teeth. In a paper in the journal Cretaceous Research, scientists have described ...

Discover the hoatzin, a stinky, leaf-eating bird of the Amazon rainforest with a cow-like digestive system, striking appearance, and unique evolutionary history. If you were to conjure up the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A peculiar fossil ...

Finding a mate in the animal kingdom is not easy. It is often a competitive and dramatic process that requires substantial effort. In many species, males go to extraordinary lengths just for a chance ...