What exactly is a species? The answer isn’t as simple as you might think.
Brood parasitism is a strange and fascinating breeding strategy seen in several hundred bird species.
A look at the prehistoric proliferation of birds and their modern-day species diversity. How is this diversity distributed around the world and why is it important?
An introduction to the long evolutionary history of birds, from the Jurassic to the mass extinction at the end of the Creataceous.
