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 Leptodon Sundevall, 1836 [monotypic]
               Leptodon cayanensis (Latham, 1790) - grey-headed kite
                 1 Leptodon cayanensis cayanensis (Latham, 1790)
                 2 Leptodon cayanensis monachus (Vieillot, 1817)