One of the world champions of long-distance migration is the Arctic Tern. Arctic Terns nest across the far northern reaches of the continent during our summer, then fly south to Antarctica for the rest of the year. Some will circle the polar ice-pack before heading north again, completing…

Emily Dickinson: "The Birds begun at Four o'clock..." As the first rays of sunlight fill the trees on a spring morning, a symphony of birdsong erupts. As early morning light extinguishes the stars, male birds begin to belt out their songs. One of the magical gifts of spring is the dawn…

The vernal equinox, the first day of spring. The moment when the sun is directly above the equator, and day and night are nearly equal all over the world. Yet birds sense the growing hours of daylight through a surge of hormones. It’s time to sing! Both science and folklore tie spring to…

Darvin Gebhart is a champion goose-caller. But there are also birds that use human language. Sparkie Williams was a famous parakeet, or budgerigar, that lived in England in the 1950s. He recorded commercials for bird seed and released his own hit single "Pretty Talk." Alex, the African…

House Finches eat many kinds of seeds and fruits. A careful look at male House Finches at a feeder shows that, while most males show red feathering, some are decidedly more orange - and some even yellow. House Finches acquire their coloration from pigments known as carotenoids in the foods…

In winter, a foraging flock might include several species of birds: chickadees, kinglets, and even a Downy Woodpecker. Many bird species eat alone, so you might wonder why these birds have chosen to dine together. Different species foraging in a group to find food enhances the success of…

Scientists have puzzled for centuries over how different groups of birds are related. Did birds that look physically alike, such as falcons and hawks, arise from a common ancestor, or did they reach those similarities independently? This line of inquiry was given an immense boost in recent…

Gulls are often called "seagulls," but many spend a lot of time far away from the sea. The Franklin's Gull breeds in freshwater wetlands more than 5,000 miles from its winter home at the ocean. After the breeding season, they ascend high in the sky for their long flight across the Equator…

Most hummingbirds retreat south in autumn, but Anna's Hummingbirds are found in northern latitudes throughout the year. Since 1960, they've moved their year-round limit north from California to British Columbia. They're taking advantage of flowering plants and shrubs, as well as…

Black Rails are marsh-inhabiting birds, more often heard than seen. Many Black Rails nest in marshes along the Atlantic seaboard and in the Midwest. But in winter they concentrate in the coastal marshes of East Texas, Louisiana, and Florida, areas that face many threats. US populations of…