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 kennicotti (Elliot, 1867) see Otus kennicottii (Elliot, 1867)
                 1 Otus kennicotti kennicotti (Elliot, 1867) see Otus kennicottii kennicottii (Elliot, 1867)
                 2 Otus kennicotti bendirei (Brewster, 1882) see Otus kennicottii bendirei (Brewster, 1882)
                 3 Otus kennicotti aikeni (Brewster, 1891) see Otus kennicottii aikeni (Brewster, 1891)
                 4 Otus kennicotti cardonensis Huey, 1926 see Otus kennicottii cardonensis Huey, 1926
                 5 Otus kennicotti xantusi (Brewster, 1902) see Otus kennicottii xantusi (Brewster, 1902)
                 6 Otus kennicotti yumanensis Miller & Miller, 1951 see Otus kennicottii yumanensis Miller & Miller, 1951
                 7 Otus kennicotti vinaceus (Brewster, 1888) see Otus kennicottii vinaceus (Brewster, 1888)
                 8 Otus kennicotti suttoni Moore, 1941 see Otus kennicottii suttoni Moore, 1941