The mystery of why birds’ eggs come in so many shapes has long been up in the air. Now new research suggests adaptations for flight may have helped shape the orbs. Stronger fliers tend to lay more ...

Over the years, scientists have learned about literally thousands of different bird species, and each one sports a distinctive beak shape. But why do bird beaks come in so many different shapes and ...

A study found that only a small percentage of bird beak shape variation is dependent on diet, with other factors like display and nest construction probably playing parts too. The shape of the beaks ...