Poliornis rufipennis Sundevall, Öfvers. K. Sv. Vet. Akad. Förhandl., vol. VII, No. 5, 8th. May 1850, p. 131.= Butastur rufipennis Sundevall, 1850
Holotype ? : Adult, Khartoum, Anglo-Egyptian Sudan. IX. 1835. J. Hedenborg leg. No. 3941. - Measurements of type : wing : 307 mm.; tail : 172 mm.; culmen from cere : 16,5 mm.; tarsus : 58 mm.Click on the picture for enlargement.