A century of screen history shows how heroic conservationists became tweed-clad caricatures, and when Hollywood finally ...

Found in tropical seas around the world, this long-winged seabird is only a very rare visitor to North America. Most records are from Florida, especially around the islands of the Dry Tortugas, but ...

Often shown in documentaries about the Galapagos, where pairs bow and shuffle and show off their blue feet, the Blue-footed Booby also nests as far north as western Mexico. In some years, small ...

A big, pale, ghostly gull of the far north. The only large gull common in the high Arctic, although a couple of small gulls are successful there as well. At various times the Glaucous Gull may fill ...

Common along tropical and subtropical shores, the Royal Tern is a characteristic sight along the Gulf Coast and southern Atlantic Coast, less numerous in California. Aside from a few interior ...

Seen soaring at a distance over rugged country in the southwest, the Zone-tailed Hawk looks remarkably like a Turkey Vulture. It may be overlooked even by birders who are searching for it. This close ...

The Broad-winged Hawk is a small hawk, common in eastern woodlands in summer. Staying around the edges of forest, the Broad-wing Hawk is often not very noticeable during the breeding season, but form ...

This regal bird is the largest of our soaring Buteo hawks, a fitting raptor for the wide skies and windswept plains of the west. It soars with its broad wings held in a shallow V, and swoops down to ...

This slim and graceful hawk is a common sight over grasslands of the Great Plains and the west, but only in summer: every autumn, most individuals migrate to southern South America. Although ...

In the arid southwest, the Common Black Hawk is limited to the edges of flowing streams. A bulky bird, with very broad wings, short tail, and long legs, it usually hunts low along streams, even wading ...

Our most beautiful bird of prey, striking in its shape, its pattern, and its extraordinarily graceful flight. Hanging motionless in the air, swooping and gliding, rolling upside down and then zooming ...

This trim, elegant falcon once nested in desert grassland of the southwest, but the Aplomado Falcon has been very rare north of the Mexican border since the 1920s or before. Recently a few have ...