These Emperor Penguins feed on fish and squid in the icy ocean. Getting into the sea is easy, but getting out is another story. How does a penguin haul its plump, 80-pound body up and over icy ledges that are several feet high, while avoiding nearby predators? Underwater video has revealed…

Hooded Mergansers, affectionately known as “Hoodies,” nest across most of the northern US and well into Canada. They’re especially prevalent around the Great Lakes, though some winter as far south as Florida. By November, courtship and pair formation is well under way. And by early spring…

After hawks and eagles, some of the sharpest eyes belong to hawk-watchers, experienced spotters who count raptors during spring and fall migration. Groups like HawkWatch International organize census counts of hawks (like this Red-tailed Hawk) and other raptors. HawkWatch sites lie along…

Chickadees and titmice, nuthatches and jays, and woodpeckers, like the Pileated pictured here, all love suet. As do birds whose beaks can’t open seeds, like tiny kinglets, and almost any wintering warbler. The Brown Creeper, usually creeping up tree trunks, is a cool bird to discover at…

The American Dipper stands on a rock in a stream, bobbing up and down on its long legs - "dipping" - hence the name. But watch! This nondescript bird steps off a small boulder right into the torrent, and begins to peer under water. What the American Dipper might lack in bright color it…

In spring, we often hear woodpeckers hard at work, carving out nest holes in tree trunks. And now that fall has arrived, we may hear that excavating sound again. Some woodpecker species stay year round in the region where they nest, while others migrate south in winter. Those that remain…

As most young male birds get ready to leave the nest, they learn their species’ song by hearing their male parent sing it again and again. They imprint on their father’s song. So how does a Brown-headed Cowbird, raised by parents of a different species, learn to sing the correct song? The…

A forest in New Zealand rings with the sound of bellbirds, also known as Korimako or Makomako. Many bellbirds sing together, especially in the morning. Pairs sing duets. And a pair may counter-sing with its neighbors, perhaps letting them know that this patch of land is taken. It all…

What could bring crowds of people out after sunset on a September evening to stare at ... a chimney? Swifts, of course! Scores of swifts form a funnel-shaped cloud above the right kind of chimney, then they begin their descent. First one, then a few more, then dozens, then hundreds swirl…

Adjusting the flaps on an airplane’s wing allows a pilot to control lift and drag — and the design of these flaps was inspired by the wings of birds. All flying birds have what’s called an alula on each wing. At the center of the front edge of the wing is a structure covered with three to…