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] Strigiformes Wagler, 1830 - owls
         Family Strigidae Vigors, 1825 - owls
           Subfamily Striginae Vigors, 1825 - strange-eared owls
             Genus Otus Pennant, 1769
               Otus choliba (Vieillot, 1817) - tropical screech-owl
                 1 Otus choliba luctisonus Bangs & Penard, 1921
                 2 Otus choliba margaritae Cory, 1915
                 3 Otus choliba duidae Chapman, 1929
                 4 Otus choliba crucigerus (Spix, 1824)
                 5 Otus choliba suturutus Kelso, 1941
                 6 Otus choliba decussatus (Lichtenstein, 1823)
                 7 Otus choliba choliba (Vieillot, 1817)
                 8 Otus choliba wetmorei Brodkorb, 1937
                 9 Otus choliba uruguaiensis Hekstra, 1982