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 Asioninae
             Genus Asio Brisson, 1760
               Asio flammeus (Pontoppidan, 1763) - short-eared owl
                 01 Asio flammeus flammeus (Pontoppidan, 1763)
                 02 Asio flammeus portoricensis Ridgway, 1882
                 03 Asio flammeus domingensis (Statius Müller, 1776)
                 04 Asio flammeus galapagoensis (Gould, 1837)
                 05 Asio flammeus bogotensis Chapman, 1915
                 06 Asio flammeus pallidicaudus Friedmann, 1949
                 07 Asio flammeus suinda (Vieillot, 1817)
                 08 Asio flammeus sanfordi Bangs, 1919
                 09 Asio flammeus sandwichensis (Bloxam, 1827)
                 10 Asio flammeus ponapensis Mayr, 1933