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 ...

“normal” beaks (examples shown of a petrel and a gull) and a bird with a tactile bill-tip organ (a tinamou, close relative of ostriches and emus and which has an ancestral bill-tip organ ...

The struggle is mainly about food -- different types of seeds -- and the availability ... the struggle to survive favored the larger birds with deep, strong beaks for opening the hard seeds.

Here are ten birds, or types of birds with some of the world’s longest beaks. These birds evolved to wade in water and spear their prey, so they not only have some of the world’s longest 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.