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 ...

Although other birds also produce yellow and red feathers, parrots evolved unique pigments, called psittacofulvins (from the ancient Greek "psittakós" for parrot, and the Latin "fulvus" for ...

It is known as the world’s most beautiful fuck, its plumage looks a lot like its hand-painted and it is so amazing to be real ...