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 watsonii (Cassin, 1848) - tawny-bellied screech-owl
                 1 Otus watsonii watsonii (Cassin, 1848) - tawny-bellied screech-owl
                 2 Otus watsonii usta (Sclater, 1859) - austral screech-owl