Next time you’re in the city, look up. When pigeons are wheeling, you might just see a different bird in pursuit. The Cooper’s Hawk, once known as the “chicken hawk,” used to be in steep decline due to hunting and the effects of DDT on breeding. Today, it’s the most abundant of the bird…

The Greater Roadrunner is a common species in the desert and brush country of the Southwest, but its full range reaches from California to western Louisiana. Its soft cooing voice hints at its connections to another bird: scientists group roadrunners with the cuckoos. Where to see a…

Ornithologist Bill Evans has helped us better understand the sounds that birds make as they migrate at night. Known as nocturnal flight calls, many species can be identified based on their signature sound. Using special handmade microphones left outside overnight, Evans, his colleagues and…

Vampire Ground-Finches menace their victims in broad daylight, stabbing holes in their flesh, then devouring the blood. During the dry season, when their usual diet of seeds can be scarce, they turn to large seabirds, like boobies. Fluttering onto a booby’s back, the finch jabs its sharp…

The Cinereous Mourner is a small, ashy-gray bird that lives in the forest understory of the Amazon Basin. And it’s taking mimicry to the next level: when viewed from above, lying alone in its cup-shaped nest, its chick is a near match to a highly toxic caterpillar — one that snakes and…

Surf Scoters are perfectly at home in the element they’re named for. They swim smack in the middle of what surfers call the impact zone: Just where the waves break with greatest violence. Why risk the harshest waves when there’s calmer water close by? Because the churning action of…

When it comes to nests, common sense suggests that large birds build large nests, and small birds build small nests. But in fact, some species of smaller birds build large nests. None, though, builds anything like the communal structures of Sociable Weavers in southern Africa’s arid plains…

What an amazing array of sounds birds have to offer! The call of a male Yellow Rail sounds like someone tapping two small stones together. And Turkey Vultures hissing at one another over a carcass sound like a snarling lion. The duet between the male and female Barred Owls seen here is…

Birds have developed many strategies for protecting their young. But only one species can tuck its chicks into pouches under its wings, then fly the young to safety. It’s the Sungrebe of Central and South America. Despite the name, they are not closely related to grebes. Sungrebes swim and…

Blackpoll Warblers make one of the longest migrations taken by a songbird in the world. Blackpoll Warblers that breed in Alaska fly southeast in the fall, appearing throughout the Midwest and eastern U.S. on their way to the Atlantic Coast. Then, they make a nonstop flight over the water…