Peregrine falcons have dark stripes under their eyes, thought to reduce sun glare. But in other falcon species these markings are unrelated to sunlight.

There are 39 species of falcon in the world. They occur on all continents except Antarctica. Falcons belong to a group of unrelated birds called raptors (or birds of prey), which are distinguished ...

But all of that is a world away ... The U.A.E. funds a large-scale breeding program to repopulate the species. A falcon takes down a duck during a training session in the desert outside Dubai.