Some gulls and terns may show a glowing pink color, similar to that of flamingos and spoonbills. This pink color comes from pigments in the birds' food called carotenoids. These gulls and terns are able to convert these naturally occurring pigments to hues that may enhance their success at…

Resident Cooper’s Hawks that nest in the urban areas of Albuquerque, New Mexico, are thriving as the populations of doves, their prey, have exploded. The easy prey gives the urban birds a competitive advantage over hawks in more natural habitats, where prey is less concentrated. The…

Many birds – like this Indigo Bunting – can be found in ecotones, the borders between two habitats. Indigo Buntings breed in the ecotone between forest and meadow. They are common at Muscatatuck National Wildlife Refuge in Indiana, where grassland and forest are interspersed to produce…

As darkness descends on a May evening, the voices of many birds go quiet. But for some birds, especially those known as nightjars, the music is just beginning! An Eastern Whip-poor-will shouts out its name. The call of a Common Poorwill echoes across a canyon. A Common Pauraque calls from…

Waterfowl like this Muscovy duckling spend up to 30 days in the egg, so they’re able to walk, swim, and feed themselves as soon as they hatch. We call these chicks precocial. By contrast, the chicks of most songbirds spend less time maturing in the egg. They must continue to develop in the…

Seabirds have no problem drinking sea water. The salt they take in is absorbed and moves through their blood stream into a pair of salt glands above their eyes. The densely salty fluid is excreted from the nostrils and runs down grooves in the bill. As the drop gets larger, the bird shakes…

Unlike many shorebirds, Willets breed inland. When nesting is done, they migrate south to both Atlantic and Pacific coastlines in the U.S. and Central and South America. What they all have in common, wherever they have bred and wherever they spend the winters, is an unmistakable voice…

Nocturnal Long-eared Owls tuck up in dense stands of trees across North America and temperate Europe and Asia. They may form communal roosts up to a hundred in number in the winter. After dark, their low-pitched hoots carry for half a mile, as they cruise low over fields, listening…

A bird of prey in the American Southeast takes grace to an utterly new level. It's the Swallow-tailed Kite. A sleek raptor with a deeply forked tail, the Swallow-tailed Kite almost never flaps its wings. The bird makes sudden tight turns, upside-down moves, and quick backward dives, all by…

Gulls seem so much a part of the sea that we often just call them "seagulls," a colloquial title for these graceful, ubiquitous creatures. Twenty-two species breed in North America. The Pacific coast is home to the aptly named Western Gulls. The familiar Ring-billed Gull nests all across…