After surviving a likely gunshot wound in July, a bald eagle in Missouri is showing an important sign of recovery–keratin ...

The outer sheaths of birds’ beaks grow continually throughout their lives, but when they are properly aligned, the tips wear each other away and the beak stays straight and normal in length.

A bird beak is the most important resource it has, and every species has one solely designed for survival. Birds use beaks for just about everything: building nests, feeding their young ...