The animal kingdom gives us rainbows of color with butterflies and chameleons, and clownfish, but birds give us just as much ...

After ruling out diet, scientists discover the secret behind blue feathers lies inside how the feathers are made. Gavriel Jecan / Corbis For decades, scientists have known how birds with yellow or ...

blue, scarlet, and green. These colors distinguish them as some of the world's most dramatic and attractive birds. Males often sport vibrant feathered ruffs or amazingly elongated feathers ...

Feathers: Displays of Brilliant Plumage by Robert Clark, published by Chronicle Books 2016 This tail feather comes from a male red bird of paradise ... it’s green or blue.