Gentoo Penguins are the fastest penguins in the world. A group of researchers used the penguin’s streamlined shape to design a new undersea robot called the Quadroin. This robo-penguin has sensors to measure ocean conditions and currents. It’s particularly suited to studying eddies, which…

Ravens are seen as tricksters in many traditions. But Common Ravens have a softer side. During courtship, a pair will often sit side by side, sometimes preening each other's feathers. And during that ritual, one or both may make soft warbling sounds. Raven nestlings sometimes make this…

Thanks in part to the political will and financial contributions of waterfowl hunters and such organizations as Ducks Unlimited, natural wetlands that might otherwise have been lost have been preserved. Take a field trip with your local Audubon chapter to see what you can see. Maybe you'll…

American Coots settle onto lakes and estuaries, forming rafts of hundreds, even thousands, of birds. They like to feed on aquatic vegetation, and sometimes they lumber ashore to nibble at grasses and agricultural crops. The coot's lobed toes help it swim and maneuver under water. To get…

Even in winter, some birds — including Black-capped Chickadees, House Finches, and American Robins — greet the sunrise with song. We normally hear the dawn chorus in springtime, when birds sing to define territory and attract mates. But birds don’t breed by warmth alone. Day length is a…

Flapping with deep, slow wing-motion, a Short-eared Owl appears almost to float above the ground. This owl has an extensive world range, including North and South America, Europe, and Asia. Still, it's declining, due to development, agriculture, and overgrazing. American Bird Conservancy…

A tube of black oil sunflower seeds isn’t “natural”…and neither is a suet cake. Yet as soon as you hang them up, the neighborhood birds, like these female finches, find them. Those grosbeaks at your feeder probably never ate sunflower seeds in nature. Sunflowers grow in open plains, while…

Most birds have the capacity to make red feathers, even those that lack red plumage. This discovery was revealed by scientists who studied Red-factor Canaries — a “hybrid” bird that is part canary, part Red Siskin, like this one. Both species have the “redness gene.” But Red-factor…

As the winter sun sinks over the Coulee Lakes, hundreds of Gray-crowned Rosy-Finches suddenly appear, an undulating cloud that swarms into the upper levels of the basalt cliffs. The finches nest high in the mountains in summer, and roam the countryside in large flocks in winter. Gray…

During December, birds spend the long, cold nights in a protected place, sheltered from rain and safe from nighttime predators. Small forest birds, such as nuthatches and creepers, may spend the night huddled together in tree cavities. Birds like this male Mallard fluff up their feathers…