In a new paper, researchers recorded bears in Alaska increasingly turning to eider and guillemot eggs and chicks as sea ice ...

A small, graceful marsh tern, black and silver in breeding plumage. In its choice of surroundings, the Black Tern leads a double life: in North America in summer it is a typical bird of freshwater ...

Related to the typical falcons, but very different in shape and habits. The Crested Caracara is a strikingly patterned, broad-winged opportunist that often feeds on carrion. Aggressive, it may chase ...

This dark, long-bodied diving bird floats low in the water with its thin neck and bill raised; perches upright near water with wings half-spread to dry. The Double-Crested Cormorant (which rarely ...

The Summer Tanager sings a languid song in southern woods, sounding like a lazy American Robin. Seeing the bird may require some patience, because it usually moves rather slowly in the treetops, often ...

In leafy woodlands of the East, the Rose-breasted Grosbeak often stays out of sight among the treetops. However, its song -- rich whistled phrases, like an improved version of the American Robin's ...

Until the 1970s, the Boat-tailed Grackle was considered to be the same species as the Great-tailed Grackle, but the two forms overlap on the coasts of Texas and Louisiana without interbreeding. The ...

The most widespread of the three North American species of rosy-finches, the Gray-crowned Rosy-Finch nests from the islands of western Alaska south to the high mountains of California and northern ...

Named for its ringing kis-ka-dee calls, this bird seems to break the rules for the flycatcher family. Besides flying out to catch insects in the air, it also grabs lizards from tree trunks, eats many ...

A common bird of western forests. Steller's Jay is most numerous in dense coniferous woods of the mountains and the northwest coast, where its dark colors blend in well in the shadows. Except when ...

Extensive freshwater marshes are the favored haunts of this large, stout, solitary heron. It is seldom seen as it slips through the reeds, but the odd pumping or booming song of the American Bittern ...

Along quiet streams or shaded riverbanks, a lone Green Heron may flush ahead of the observer, crying 'kyow' as it flies up the creek. This small heron is solitary at most seasons and often somewhat ...