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.

A bird beak is the most important resource it has, and every species has one solely designed for survival. Birds use beaks ...

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.

But have you ever wondered why so many birds have red beaks? In some cases, a red beak helps them attract mates. For others, it helps with camouflage in their natural habitat. In most cases ...

In Alaska during the mid-1990s, bird experts noticed an uptick in overgrown, warped beaks among black-capped chickadees. Now, using high-throughput RNA sequencing, researchers at the University of ...