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

If you've confused these two lookalikes before, you're not alone. Here's what the moths have in common with hummers, how they ...

The story of a gruesome half-owl, half-person that eats human hearts is so dreaded that few will even talk about it—as I ...

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 ...

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 ...

This incredibly long-billed sandpiper is the largest shorebird in North America; but more often than not, it is seen away from the shore. The Long-billed Curlew spends the summer on the grasslands of ...

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 ...

The Pacific Golden-Plover is so similar to the American Golden-Plover that the two were regarded as one species until 1993. However, the birds can tell the difference: where the two forms overlap in ...

A large falcon of the arid west. The Prairie Falcon is nearly the size of the famous Peregrine Falcon, but differs in its hunting behavior, often pursuing small prey with rapid, maneuverable flight ...

This strikingly patterned southwestern hawk is more sociable than most birds of prey. The Harris's Hawk is often seen in groups of three or more, the birds perching close together on poles or giant ...

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 ...

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 ...