Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       [Order] Falconiformes Sharpe, 1874
         Family Accipitridae Vieillot, 1816 - secretary bird, osprey, kites, hawks and eagles
           Subfamily Accipitrinae Vieillot, 1816 - hawks, eagles
             Genus Gampsonyx Vigors, 1825 [monotypic]
               Gampsonyx swainsonii Vigors, 1825 - pearl kite
                 1 Gampsonyx swainsonii leonae Chubb, 1918
                 2 Gampsonyx swainsonii magnus Chubb, 1918
                 3 Gampsonyx swainsonii swainsonii Vigors, 1825