Bird beaks come in almost every shape and size - from the straw-like beak of a hummingbird to the slicing, knife-like beak of an eagle. We have found, however, that this incredible diversity is ...

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 ...

Over time, natural selection favored finches with sharper, longer beaks. These birds were better equipped to quickly and easily pierce the skin of their booby bird neighbors. Vampire finches still ...