One obvious reason why people enjoy the existence of birds so much is their bright and varied colors. Humans — and most mammals — seem boring in comparison. But why are birds the colors that they are?

OKINAWA, Japan, Nov. 4 (UPI) --Everything seems brighter in the tropics: the sky, the ocean, the houses, the birds. Think tropics and brightly feathered toucans and parrots come to mind. Why is that?

Explore how the vulturine guinea fowl’s striking blue and white feathers serve more than beauty. From structural coloration ...

The color palette of the birds you see out your window depends on where you live. If you're far from the Equator, most birds tend to have drab colors, but the closer you are to the tropics, you'll ...

The eggshells of modern birds exhibit a spectacular array of rainbow hues—from butter yellow to blood red, palest aqua to darkest cyan. Some are spotted or speckled; others are blemish-free. How and ...