Some bird species form flocks with other species. Learn about the scientific explanations for why this happens.
Learn about he complex structure of feathers and the different ways they're used by birds.
Brood parasitism is a strange and fascinating breeding strategy seen in several hundred bird species.
When birds disappear at night, where and how do they sleep? Learn how sleep in birds is quite different from what humans do.
An entire episode devoted to hummingbirds— their evolution, diversity, behavior, and more!