Haliaeetus leucocephalus, the American bald eagle, is a rare species that is the national emblem of the United States. Although protected by law, some large eagles are killed by farmers or captured for use in falconry. The bald eagle, like other birds, has been affected by the widespread use of pesticides that can weaken eggs. They are large, predatory birds that are the symbol of power, courage, and immortality. They belong to the hawk family.