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 Falconidae Vigors, 1824 - falcons, caracaras
           Subfamily Falconinae Vigors, 1824 - falcons
             Genus Falco Linnaeus, 1758
               Falco cherrug Gray, 1834 - saker falcon
                 1 Falco cherrug cherrug Gray, 1834
                 2 Falco cherrug milvipes Jerdon, 1871
                 3 Falco cherrug coatsi Dementiev, 1945
                 4 Falco cherrug hendersoni Hume, 1871