We get captivated by a bird’s plumage and may not think to notice its beak, which is critical to the bird’s identity. I’ve often heard people yell “flamingo!” when they see a pink-plumed bird feeding ...

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 ...