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 Strix Linnaeus, 1758
               Strix woodfordi (Smith, 1834), nom. inval. see Strix woodfordii (A. Smith, 1834)
                 1 Strix woodfordi umbrina (Heuglin, 1863), nom. inval. see Strix woodfordii umbrina (Heuglin, 1863)
                 2 Strix woodfordi nigricantior (Sharpe, 1897), nom. inval. see Strix woodfordii nigricantior (Sharpe, 1897)
                 3 Strix woodfordi nuchalis (Sharpe, 1870), nom. inval. see Strix woodfordii nuchalis (Sharpe, 1870)
                 4 Strix woodfordi woodfordi (Smith, 1834), nom. inval. see Strix woodfordii woodfordii (Smith, 1834)