For a reddish-beaked bird called the zebra finch, sexiness is color-coded. Males have beaks that range from light orange to dark red. But to females, a male's colored bill may simply be hot, or ...

Adding just a pop of red or yellow to your porch can beckon birds that appreciate these colors. If the porch's main color is blue, green, or another hue many species like, a red or yellow accent ...

In the bird world, the color red has special significance. Many species use red signals to attract mates or deter rivals, adding the color to their beaks, feathers, or bare skin. As far as many ...

For example, although hummingbirds are big fans of red, a number of other birds associate this color with aggression and avoid it to stay safe. Many are also suspicious of colors that aren't found ...

While humans have three color cones in the retina sensitive to red, green and blue light, birds have a fourth color cone that can detect ultraviolet light. A Princeton-led research team trained wild ...

Why Yellow Birds Mysteriously Turn Red. No one could figure out why a North American woodpecker's feathers were changing color—until now.

Throughout those centuries of breeding canaries, one color remained elusive—red. The birds traversed the rainbow, but no hint of red had ever shown up in their feathers.

Scientists have speculated for years on how birds obtained their colors, but the Yale/Cambridge study was the first to ask what the diversity of bird colors actually look like to birds themselves.

DURHAM, N.C. -- For a small, reddish-beaked bird called the zebra finch, sexiness is color-coded. Males have beaks that range from light orange to dark red. But from a female's point of view, a ...