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
       1 Subfamily Buteoninae Vigors - buzzards & eagles see Subfamily Accipitrinae Vieillot, 1816
       2 Subfamily †Palaeoplancinae Wetmore
       3 Subfamily Milvinae Vigors - true kites see Subfamily Accipitrinae Vieillot, 1816
       4 Subfamily Gypaetinae Vieillot, 1816 - Old World vultures
       5 Subfamily Circinae Sundevall, 1836 - harriers see Subfamily Accipitrinae Vieillot, 1816
       6 Subfamily Accipitrinae Vieillot, 1816 - hawks, eagles
       7 Subfamily Leptodontinae Brodkorb - smooth-browed kites see Subfamily Accipitrinae Vieillot, 1816
       8 Subfamily Elaninae Blyth - smooth-clawed kites see Subfamily Accipitrinae Vieillot, 1816
       9 Subfamily Circaetinae Blyth - harrier-eagles see Subfamily Accipitrinae Vieillot, 1816