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…

It's the time of year that geese migrate south for the winter. Isn't it? So why are there so many geese still hanging around, setting up housekeeping on our parks and golf courses? Did they decide to forgo the long trip north? In the early 1900s, non-migratory geese were brought in by the…

A parrot’s eyes are located on the sides of its head. So, if it wants to look at something — say, a delicious piece of fruit — it has to cock its head one way or the other do it. And if it looks with its left eye, then uses its left foot. Scientists call this handedness. That’s when one…

To find out if a crow can recognize an individual human face, Professor John Marzluff of the University of Washington wore a mask while trapping, banding, and then releasing seven American Crows on campus. Later, when he walked through the campus wearing the mask, it was automatic! A big…