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 is ...

Cuckoos infiltrate the nests of other birds with similar-looking eggs, but drongos have evolved a highly effective way to snuff out the imposters. Their ability to recognise the uniquely patterned ...

Reptile eggs are an interesting area of study, but what makes the distinction between snakes and lizards regarding their eggs so complicated and fascinating? Both reptiles can lay eggs and even have ...