Steller's sea eagle (Haliaeetus pelagicus), also known as Pacific sea eagle or white-shouldered eagle, is a very large diurnal bird of prey in the family Accipitridae. It was described first by Peter Simon Pallas in 1811. No subspecies are recognised. A sturdy eagle, it has dark brown plumage with white wings and tail, a yellow beak, and yellow talons. Typically, it is the heaviest eagle in the world, at about 5 to 10 kg (11 to 22 lb), but in some standard measurements, may be ranked below the harpy eagle (Harpia harpyja) and the Philippine eagle (Pithecophaga jefferyi). Steller's sea eagle is the largest bird in the genus Haliaeetus and is one of the largest raptors overall. Females vary in weight from 6,200 to 9,500 g (13.7 to 20.9 lb), while males are rather lighter with a weight range of 4,900 to 6,800 g (10.8 to 15.0 lb). The typical weight is variable, possibly due to seasonal variation in food access or general condition of eagles, but has been reported as high as a mean weight of 7,757 g (17.101 lb) to a median estimate weight of 6,250 g (13.78 lb), excluding expired eagles that were poisoned by lead and endured precipitous weight loss by the occasion of their deaths. (Source: Wikipedia.org, CC BY-SA)