Bald EagleEditThe Bald Eagle (Haliaeetus leucocephalus), the US national bird, is the only eagle unique to North America. The Bald Eagle's scientific name signifies a sea (halo) eagle (aeetos) with a white (leukos) head. At one time, the word "bald" meant "white", not hairless. Bald Eagles are found over most of North America, from Alaska and Canada to northern Mexico. About half of the world's 70,000 bald eagles live in Alaska.
Golden Eagles range from sea level to 5,500 m altitude, occupying most of the open terrain of deserts, mountains, plateaus, and steppes in the Northern Hemisphere. They are not usually found in heavily forested areas. Golden Eagles living in the northern part of their range move south when the food supply becomes scarce in the winter.