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Organism
  Animalia
      Chordata
            Aves
                    Strigiformes
                            Strigidae
                                     Asio
                                             Asio abyssinicus
                                             Asio capensis
                                             Asio flammeus
                                             Asio madagascariensis
                                             Asio otus
                                     Bubo
                                             Bubo africanus
                                             Bubo ascalaphus
                                             Bubo capensis
                                             Bubo cinerascens
                                             Bubo lacteus
                                             Bubo leucostictus
                                             Bubo poensis
                                             Bubo shelleyi
                                             Bubo vosseleri
                                     Glaucidium
                                             Glaucidium capense
                                             Glaucidium perlatum
                                             Glaucidium sjostedti
                                             Glaucidium tephronotum
                                     Jubula
                                             Jubula lettii
                                     Otus
                                             Otus brucei
                                             Otus capnodes
                                             Otus hartlaubi
                                             Otus icterorhynchus
                                             Otus insularis
                                             Otus ireneae
                                             Otus madagascariensis
                                             Otus moheliensis
                                             Otus pauliani
                                             Otus pembaensis
                                             Otus rutilus
                                             Otus scops
                                             Otus senegalensis
                                     Ptilopsis
                                             Ptilopsis granti
                                             Ptilopsis leucotis
                                     Scotopelia
                                             Scotopelia bouvieri
                                             Scotopelia peli
                                             Scotopelia ussheri
                              Striginae
                                     Ketupa
                                             Ketupa zeylonensis
                                     Strix
                                             Strix aluco
                                             Strix butleri
                                             Strix woodfordii
                                                   [Ciccaba woodfordii]
                              Surniinae
                                     Athene
                                             Athene noctua
                                     Ninox
                                             Ninox superciliaris