维基

The Bald Eagle (Haliaeetus leucocephalus) is an eagle found in North America. As an adult they feature dark brown feathers with white head and tail feathers. Their beaks, feet, and irises are bright yellow. The bald eagle has a body length of 70–102 cm (28–40 in) and typical wingspan between 1.8 and 2.3 m (5 ft 11 in and 7 ft 7 in). Their mass is normally between 3 and 6.3 kg (6.6 and 13.9 lb). Males' average 4.1 kg (9.0 lb) and females average 5.6 kg (12 lb).