From the almost perfectly spherical eggs of the brown hawk owl to the pointy eggs of the sandpiper, there is a surprising variety in the shape of bird eggs. Yet why birds lay different shaped eggs has ...

The ability of birds to fly more efficiently by changing the shape of their wings has inspired a number of approaches to developing low-energy aircraft. If this technique can be replicated, where ...

Q. I saw a photo of different kinds of bird eggs and noted not only the obvious, that smaller birds lay smaller eggs, but also that some bird eggs are elongate, whereas others are more rounded. What ...

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 ...

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 ...

In a finding that could change the way scientists think about bird evolution, researchers have found that the shape of bird wings is influenced more by how closely related species are to one another ...