- Eagles are large birds of prey found on all continents except Antarctica. They are at the top of the food chain, preying on animals from fish to mammals that are often larger than themselves. - Eagles have excellent eyesight and powerful talons and beaks adapted for catching and killing prey. Hunting techniques vary between species and sexes. - Eagles range in size from small forest-dwelling species to the largest having a wingspan over 7 feet. Females are generally larger than males. Their plumage darkens with age.