Two teams of researchers have independently identified a gene-encoded enzyme in birds that converts yellow pigments obtained from the diet into red pigments, which birds then use to color their ...

In the 1300s, Spanish explorers discovered a small bird living in the islands off the western coasts of Portugal and Morocco, with dull green feathers but a sweet lyrical voice. The bird became ...

For many birds, just like for many people, red is the color of love. And, as with so many things, there is science behind the color. Researchers at Washington University School of Medicine in St.

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. Generally speaking, ...