Phylum Chordata Bateson, 1885 - chordates
   Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
       Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
         Order Falconiformes Sharpe, 1874
           1 Family Cathartidae Lafresnaye, 1839 - New World vultures
           2 Family Pandionidae Sclater & Salvin, 1873 - ospreys
           3 Family Accipitridae Vieillot, 1816 - secretary bird, osprey, kites, hawks and eagles
           4 Family Sagittariidae Finsch & Hartlaub, 1870 - secretarybird
           5 Family Falconidae Vigors, 1824 - falcons, caracaras