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

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 ...

It is endowed with birds that have beautiful covers of feathers on their bodies and perform unmissable courtship dances. But the vibrant and colourful beaks are one among those features that often ...

Under these drastically changing conditions, the struggle to survive favored the larger birds with deep, strong beaks for opening the hard seeds. Smaller finches with less-powerful beaks perished.