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 for just about everything: building nests, feeding their young ...

Yet, some early birds, including the ancestors of ... such as a beak devoid of teeth, a reduced maxillary contribution to the ...

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 ...