Top 4 Quotes by Tim Birkhead

Compared with mammals, birds have relatively large eyes. In simple terms, a bigger eye means better vision, and excellent vision is essential for avoiding collisions in flight, or for capturing fast-moving or camouflaged prey. Birds' eyes, however, are deceptive - they are bigger than they look.

There are several ways we can know what a dog, a bird or, indeed, any other organism can see, for example either by looking at the structure of the eye and comparing it with other species, or by behavioural tests.