A Red-tailed Hawk soars on broad, rounded wings, the epitome of effortless flight. Without flapping, it traces a leisurely, rising circle. The hawk is riding a thermal, a column of warm rising air generated near the earth's surface by heat from the sun. The Red-tail periodically circles to…

The ancient Greeks and Egyptians described a mythical bird called the Phoenix, a magnificent creature that was a symbol of renewal and rebirth. According to legend, each Phoenix lived for 500 years, and only one Phoenix lived at a time. Just before its time was up, the Phoenix built a nest…

Female birds need to eat calcium to have enough of the mineral to lay their eggs. But it can be hard to find enough of it to eat in nature. We can help our backyard birds by offering them some extra calcium in bird feeders and by recycling our used egg shells.

One of the most musical and complex bird songs in the U.S. is that of the Brewer's Sparrow. It's a veritable aria, ringing forth from the sagebrush of Eastern Washington's Columbia Basin. Shrub-steppe is disappearing from the interior west as it is cleared for irrigated crops. The…

Pablo Neruda is considered one of the greatest poets of the 20th century. Though the Chilean poet is best known for his writings about love, birds were also close to his heart. He composed more than 20 poetic profiles of birds native to Chile including hummingbirds and albatrosses.

Want to try building a nest? Consider this... an average American Robin weighs less than three ounces. An average person weighs 170 pounds, or 1,000 times as much as a robin. A robin's nest, made of grass and mud, weighs about seven ounces, so yours will weigh 450 pounds. You'll need to…

A typical songbird belts out its song between 1,000 and 2,500 times per day. Even though most bird songs last only a few seconds, that's a lot of warbling! A Yellowhammer, a European bunting, may sing over 3,000 times a day. But the Yellowhammer doesn't even come close to the North…

The Arctic is still wintry when male Snow Buntings return to nesting areas in April. There's a big benefit to arriving early enough to claim a prime nest cavity in a rock face or under boulders, where it will be safer from predators. Nesting in chilly rock cavities means extra care must be…

Este pingüino emperador se alimenta de pescado y calamar en el océano congelado. Meterse al mar es sencillo, pero salir de él es otra historia. ¿Cómo logra un pingüino levantar ese cuerpo regordete de 35 kilos por encima de salientes heladas de varios pies de altura , mientras esquiva a…

When glaciers pushed south into what is now the U.S. around 20,000 years ago, they scraped off the soil layer and spelled the end of native earthworms except in the southern states. So the earthworm plucked by the robin in the park or on your lawn is probably a relatively new arrival, most…