Bird beaks, or bills, come in many shapes and sizes. And birds use them for just about everything: to collect food, preen, fight, court (as this pair of Laysan Albatrosses is doing), chop holes in trees, weave nests, and more. In order for a bird to fly, its beak must weigh as little as…

A slim, sleek bird with a spiky crest, Phainopepla comes from the Greek for “shining cloak.” The name refers to the male’s glistening, inky black feathers, which are set off by piercing red eyes. And if the Greek name isn’t helping you picture it, a common nickname might: the goth cardinal…

El arao común se encuentra entre las pocas especies de aves que pueden "volar" bajo el agua. El arao tiene que aletear frenéticamente para mantenerse en el aire. Pero debajo de las olas, con sus alas en forma de aletas parcialmente extendidas, es un nadador magistral y aerodinámico. Los…

A young crossbill starts life with a wedge-shaped beak. As it grows up and starts to feed itself by removing conifer seeds from their tough packaging, the tips of its bill begin to grow rapidly — and then they cross. By the time the bird is a month and a half old, the tips of its bill…

Horned Larks rival meadowlarks as the most colorful birds of North American grasslands. They live in prairies, fields, and tundra, but agriculture and development now intrude on many of the Horned Lark's traditional nesting areas. The farmland Conservation Reserve Program encourages…

In the arid Arizona desert, where cacti thrive but trees are scarce, the Gila Woodpecker and Gilded Flicker carve out nest cavities in living saguaros. Tall, old saguaros may be pocked with twenty or more nest holes, bearing witness to decades of woodpecker families. The woodpeckers…

In Africa, where there are dozens of starling species, a quick look reveals a variety of visual stunners. Some of the names hint at their dazzle: Superb Starling, as well as Golden-breasted, Emerald, Purple, Violet-backed, and Splendid Glossy Starlings. Starlings sparkle because they have…

A male Buff-breasted Sandpiper courts a female on their breeding grounds far north of the Arctic Circle. He raises his wings, flashing their silvery-white undersides, as he sings his clicking serenade. These birds spend much of the year on grasslands in Argentina, migrating to the Arctic…

If long migratory flights are amazing, what goes on inside a bird’s body during those flights seems absolutely astonishing. To store fat, birds may eat three times as much and forage over many more hours than normal, as they prepare for long-distance travel. Blackpoll Warblers double their…

New Zealand was once home to a massive parrot that stood three feet tall, about hip-high to most adult humans. It’s estimated that the bird weighed around fifteen pounds, and it probably didn’t fly. But it didn’t need to, because there were no land predators at that time — between sixteen…