Order Accipitriformes Vieillot - diurnal birds of prey see Order Falconiformes Sharpe, 1874 Suborder Accipitres (C. Linnaeus, 1758) - hawks Family Accipitridae Vieillot, 1816 - secretary bird, osprey, kites, hawks and eagles Subfamily Circinae Sundevall, 1836 - harriers see Subfamily Accipitrinae Vieillot, 1816 Genus Circus Lacépède, 1799