Baby Bald Eagles have a lot to learn before they reach adulthood. While still in the nest, they practice fanning their wings and jumping into the air to test their strength. When they’re finally ready for their first test-flight, the fledglings sometimes land unceremoniously on the ground…

The most distinctive characteristic of the California Quail is the black, forward-facing topknot that juts out from its forehead like a small flag. The California Quail – the state bird of California – builds its nest right on the ground. Almost immediately after hatching, the precocial…

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…

Crows. Large, black, noisy. The raucous birds of the neighborhood. Some people love them; others aren't so sure. American Crows are crafty and resourceful. Crows have adapted to our modern world. For one thing, they, too have a taste for fast food. Watch for crows at your local fast food…

Puede que nunca hayas visto un cardenal norteño en la naturaleza, pero probablemente lo has visto en tarjetas navideñas o en la portada de algún libro de aves. Durante la temporada de reproducción en primavera, el biólogo Eric Lind y su equipo capturan y anillan aves en Constitution Marsh…

The White-crowned Sparrow pours out its song over and over on spring and summer days-and even on moonlit nights-often up to 15 times a minute. Now here's a curious thing: Just as people in different regions may have different dialects, White-crowns have different songs, according to where…

Here they come! Rufous Hummingbirds, Black-chins, Broad-bills, Ruby-throats, and others are migrating north after a hot, dry winter in sunny Mexico or Central America. And they’re ready for a drink. You can help these thirsty birds by hanging a hummingbird feeder filled with the right kind…

When smaller birds join forces to ward off larger birds, it's called mobbing. This behavior — like calling your family for help — is used by many bird species. The best time to observe mobbing is spring and early summer, when breeding birds are trying to protect their nests and young…

The Northern Shrike breeds in the tundra and taiga of the north, but migrates south into the lower 48 for the winter. It has a pleasing and rhythmical song, which it sings even in winter. But its song belies a rather bloodthirsty feeding habit. The shrike impales its prey on sharp thorns…

Once nesting season ends, swallows know it's time to party! Whether they nest as single pairs or in large colonies, both adults and juveniles now gather on electrical wires by the dozens, socializing before they migrate. Migrating by day – and foraging for insects as they go – swallows…