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

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.

sat a Crow and in the Crow’s beak was the biggest piece of cheese he’d ever seen. Now the Fox loved cheese more than anything in the whole world and he decided that come what may he would have ...

Medium ground finches with larger beaks could take advantage of alternate food sources because they could crack open larger seeds. The smaller-beaked birds couldn't do this, so they died of ...