One of the largest birds of prey in the world.
Younger individuals vary from solid dark brown to a generally mottled brown and white plumage.
The sexes are identical in color. In many predatory birds the female is larger than the male, but in Bald Eagles size is so variable within the sexes that it cannot be used conclusively for identification. Fish compose 60 to 90 percent of the Bald Eagle diet. Dead or crippled wildlife often are selected on the wintering ground. Prey items weigh from 3 to 5 pounds at most.