Description
provided by World Register of Marine Species
Length: 60 cm. Plumage: Adult black above white below with black band extending from upper breast down sides of body to feet, occasionally with a second narrower complete or incomplete black neck band and very sparce black spotting on belly; face black with broad white band separating face patch from crown and back of head. Immature sooty black on back, white on belly with sparce black spotting. Bare parts: iris hazel; bill black with cream band behind tip; feet blackwith pink blotches; skin above eye red.
Brown, L.H., E.K. Urban & K. Newman. (1982). The Birds of Africa, Volume I. Academic Press, London.
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