If optimists see the world through rose-colored lenses, some birds see it through ultraviolet ones. Avians have evolved ultraviolet vision quite a few times in history, a new study finds. Birds depend ...

(CNN) — Many types of birds — such as hummingbirds, peacocks and parrots — are vividly colorful, but birds-of-paradise are especially flamboyant with hues of emerald, lemon, cobalt and ruby. Now, ...

These birds are a veritable rainbow, and you might be able to find them in Alabama this summer. But you’ll need to be sneaky because despite their brilliant colors, painted buntings tend to be ...