The Cuban Giant Owl, now extinct, was 3½ feet tall and weighed 20 pounds — the largest of all known owls. It had very small wings, running after its prey on long, powerful legs. Similar large owls, with long legs and small wings, have been unearthed in places as disparate as Georgia and…

Pigeons — and other birds with eyes on the sides of their heads — have a different view of the world from that of creatures with forward-facing eyes. The images from a pigeon’s eyes overlap slightly, so the bird can see in front of itself, even though it has worse depth perception. But…

Birds like male turkeys or barnyard roosters have a wrinkly, bumpy flap of red skin called a wattle. But what are wattles for? Birds can’t sweat, so wattles help release excess heat. Wattles are also key to courtship displays. Many other birds, including some storks and plovers, also have…

Many jays, including this California Scrub-Jay, store food for sustenance in harsher seasons. An individual bird may cache nuts, insects, and even worms in several thousand spots. If jays visit your yard, here’s a game you can play with them. Each day, preferably when the jays aren’t…

Loggerhead Shrikes are found across much of the United States in open country, like pasture and sagebrush. Male shrikes are well known for impaling their prey on thorns, creating a larder that may help impress potential mates. But pesticides and the loss of habitat to residential and…

From chickadees to Cooper’s Hawks, most birds love a good bath. Some birds get the fluids they need from their food, but many birds need a drink at least twice a day. Water is essential for birds, and supplying clean water for them to drink and bathe in is a great way to help maintain…

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…

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…

No bird is better adapted for climbing up a tree trunk than a woodpecker. The foot of this Pileated Woodpecker is ideal for clinging, and its relatively short legs allow it to anchor itself securely. When traveling upward, the woodpecker’s a master. But hitching down? Not so much — usually…

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…