The Martial Eagle (Polemaetus bellicosus), is Africa's largest eagle and is the only member of the genus Polemaetus. t is a very large eagle, with a length of 76-90 cm (30-36 in), an average weight of 5.2 kg (11.6 lbs) and a wingspan of 190-260 cm (6.25-8.5 ft). The adult's plumage has dark brown upperparts, head and upper chest. The body underparts are white streaked with black. The underwing coverts are brown, with pale flight feathers, also streaked with black. The female is usually larger and more streaked than the male. The immature is paler above and has white underparts. It reaches adult plumage in its seventh year.