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 sagittatus (Cassin, 1848) - white-fronted scops-owl
               Otus rufescens (Horsfield, 1821) - reddish scops-owl
               Otus icterorhynchus (Shelley, 1873) - sandy scops-owl
               Otus ireneae Ripley, 1966 - Sokoke scops-owl
               Otus balli (Hume, 1873) - Andaman scops-owl
               Otus alfredi (E. Hartert, 1897)
               Otus spilocephalus (Blyth, 1846) - mountain scops-owl
               Otus brookii (Sharpe, 1892) - rajah scops-owl
               Otus angelinae (Finsch, 1912) - Javan scops-owl
               Otus mentawi Chasen & Kloss, 1926 - Mentawai scops-owl
               Otus bakkamoena Pennant, 1769 - collared scops-owl
               Otus fuliginosus (Sharpe, 1888) - Palawan scops-owl
               Otus megalotis (Walden, 1875) - Philippine scops-owl
               Otus silvicola (Wallace, 1864) - Wallace's scops-owl
               Otus mirus Ripley & Rabor, 1968 - Mindanao scops-owl
               Otus longicornis (Ogilvie-Grant, 1894) - Luzon scops-owl
               Otus mindorensis (J. Whitehead, 1899) - Mindoro scops-owl
               Otus brucei (Hume, 1872) - pallid scops-owl
               Otus senegalensis (Swainson, 1837)
               Otus scops (C. Linnaeus, 1758) - common scops-owl
               Otus sunia (Hodgson, 1836) - oriental scops-owl
               Otus flammeolus (Kaup, 1853) - flammulated owl
               Otus magicus (S. Müller, 1841) - Moluccan scops-owl
               Otus mantananensis (Sharpe, 1892) - Mantanani scops-owl
               Otus elegans (Cassin, 1852) - elegant scops-owl
               Otus manadensis (Quoy & Gaimard, 1830) - Sulawesi scops-owl
               Otus collari Lambert & Rasmussen, 1998 - Sangihe scops-owl
               Otus beccarii (Salvadori, 1876)
               Otus insularis (Tristram, 1880) - seychelles owl
               Otus umbra (Richmond, 1903) - Simeulue scops-owl
               Otus alius Rasmussen, 1998 - Nicobar scops-owl
               Otus pembaensis Pakenham, 1937
               Otus pauliani Benson, 1960 - Comoro scops-owl
               Otus capnodes (J.H. Gurney, 1889)
               Otus moheliensis Lafontaine & Moulaert, 1998 - Moheli scops-owl
               Otus mayottensis Benson, 1960
               Otus madagascariensis (A. Grandidier, 1867)
               Otus rutilus (Pucheran, 1849) - Malagasy scops-owl
               Otus hartlaubi (Giebel, 1872) - Sao Tome scops-owl
               Otus asio (C. Linnaeus, 1758) - eastern screech-owl
               Otus kennicotti (Elliot, 1867) see Otus kennicottii (Elliot, 1867)
               Otus seductus R.T. Moore, 1941
               Otus cooperi (Ridgway, 1878)
               Otus trichopsis (Wagler, 1832) - whiskered screech-owl
               Otus choliba (Vieillot, 1817) - tropical screech-owl
               Otus roboratus Bangs & Noble, 1918 - West Peruvian screech-owl
               Otus koepckeae Hekstra, 1982 - Koepcke's screech-owl
               Otus clarkii L. Kelso & E.H. Kelso, 1935 - bare-shanked screech-owl
               Otus barbarus (Sclater & Salvin, 1868) - Santa Barbara screech-owl
               Otus ingens (Salvin, 1897) - rufescent screech-owl
               Otus colombianus Traylor, 1952
               Otus petersoni Fitzpatrick & O'Neill, 1986
               Otus watsonii (Cassin, 1848) - tawny-bellied screech-owl
               Otus guatemalae (Sharpe, 1875)
               Otus vermiculatus (Ridgway, 1887) - vermiculated screech-owl
               Otus hoyi C. König & Straneck, 1989
               Otus atricapilla (Temminck, 1822)
               Otus sanctaecatarinae (Salvin, 1897) - long-tufted screech-owl
               Otus nudipes (Daudin, 1800) - Puerto Rican screech-owl
               Otus albogularis (Cassin, 1849) - white-throated screech-owl
               Otus marshalli Weske & Terborgh, 1981 - cloud-forest screech-owl