All (in this database) Birds list (Scientific names): Part O
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AU
B
BR
C
CH
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D
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G
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I
J
K
L
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- oahuensis (Bloxam, 1827) ( Onychoprionfuscatus)
- oatesi (Ogilvie-Grant, 1893) ( Lophuraleucomelanos)
- oatesi Sharpe, 1896 ( Garrulusglandarius)
- oatesi Salvadori, 1887 ( Niltavavivida)
- oatesi Hume, 1873 (Hydrornis)
- oatesi (Sharpe, 1903) ( Chleuasicusatrosuperciliaris)
- oatesi (Rippon, 1904) (Spelaeornis)
- oaxacae Nelson, 1900 ( Antrostomusarizonae)
- oaxacae Nelson, 1897 ( Dendrortyxmacroura)
- oaxacae (Nelson, 1897) ( Eremophilaalpestris)
- oaxacae Pitelka, 1946 ( Aphelocomaunicolor)
- oaxacae (Brodkorb, 1942) ( Thryophiluspleurostictus)
- obbiensis Witherby, 1905 (Spizocorys)
- oberholseri Stresemann, 1912 ( Collocaliaesculenta)
- oberholseri Chasen, 1935 ( Treronfulvicollis)
- oberholseri Junge, 1936 ( Eurystomusorientalis)
- oberholseri Stresemann, 1913 ( Hypothymisazurea)
- oberholseri Dickey & Van Rossem, 1925 ( Myadestesoccidentalis)
- oberholseri Phillips, 1939 (Empidonax)
- oberholseri Moore, 1937 ( Glaucidiumpalmarum)
- oberi Lawrence, 1880 (Icterus)
- oberi Ridgway, 1908 ( Dysithamnusmentalis)
- oberi Lawrence, 1877 (Myiarchus)
- oberi (Kelso, 1936) ( Pseudoscopsclamator)
- oberlaenderi (Sassi, 1914) (Zoothera)
- oberon Schodde & Mason, 1991 ( Psophodesleucogaster)
- obfuscata Zimmer, 1942 ( Ochthoecarufipectoralis)
- obidensis Todd, 1948 ( Dendrocinclamerula)
- obidensis Todd, 1925 ( Thripophagafusciceps)
- obidensis (Snethlage, 1914) ( Thamnomanesardesiacus)
- obidensis Parkes & Humphrey, 1963 ( Hemithraupisflavicollis)
- obiensis (Hartert, 1903) ( Accipiterhiogaster)
- obiensis Sutter, 1955 ( Turnixmaculosus)
- obiensis (Hartert, 1898) ( Duculabasilica)
- obiensis Salvadori, 1877 ( Tanysipteragalatea)
- obiensis (Salvadori, 1878) ( Coracinatenuirostris)
- obiensis (Hartert, 1912) ( Eumyiaspanayensis)
- obiensis Salvadori, 1878 ( Pachycephalamentalis)
- obiensis Bernstein, 1865 ( Lycocoraxpyrrhopterus)
- obiensis (Hachisuka, 1935) ( Erythropittaerythrogaster)
- obiensis Salvadori, 1876 ( Rhipidurarufiventris)
- obiensis Rothschild, 1899 ( Eossquamata)
- obiensis (Finsch, 1868) ( Geoffroyusgeoffroyi)
- obira Jany, 1955 ( Otusmagicus)
- objurgans Deignan, 1942 ( Priniarufescens)
- objurgatus (Baker, 1927) ( Falcotinnunculus)
- oblectans Deignan, 1952 ( Garrulaxsannio)
- oblita (Mayr, 1941) ( Cettiaflavolivacea)
- oblita Griscom, 1923 ( Coerebaflaveola)
- oblitus (Mayr, 1938) ( Prionochilusmaculatus)
- oblitus (Van Rossem, 1934) ( Thryophiluspleurostictus)
- oblitus (Bond, 1943) ( Nephelomyiaspulcher)
- oblitus Hartert, 1929 ( Zosteropsugiensis)
- obrieni Short, 1973 (Celeus)
- obscura Junge, 1956 ( Avicedasubcristata)
- obscura (Berlepsch & Stolzmann, 1902) ( Coeligenacoeligena)
- obscura Snethlage, 1908 ( Piayacayana)
- obscura Temminck, 1815 (Penelope)
- obscura Todd, 1947 ( Bonasaumbellus)
- obscura Pelzeln, 1857 ( Psophiaviridis)
- obscura Neumann, 1897 ( Porzanapusilla)
- obscura Delacour, 1931 ( Nesillastypica)
- obscura (Neumann, 1908) ( Priniamelanops)
- obscura Cory, 1913 ( Coerebaflaveola)
- obscura Dickey & Van Rossem, 1923 ( Aimophilaruficeps)
- obscura Zimmer & Phelps, 1944 ( Chamaezacampanisona)
- obscura Chapman, 1914 ( Synallaxismoesta)
- obscura Berlepsch & Stolzmann, 1896 ( Grallariarufula)
- obscura (Hartlaub, 1855) (Psalidoprocne)
- obscura Nores & Yzurieta, 1979 ( Sturnellaloyca)
- obscura Falla, 1948 ( Anthornismelanura)
- obscura (Gould, 1841) ( Manorinaflavigula)
- obscura Gould, 1843 (Myzomela)
- obscura (Berezowski & Bianchi, 1891) (Luscinia)
- obscura (Jardine, 1842) ( Cyanomitraolivacea)
- obscura (Meyer, 1874) ( Colluricinclamegarhyncha)
- obscura Cory, 1909 ( Dendroicapetechia)
- obscura Ridgway, 1883 ( Polioptilacaerulea)
- obscura (Hablizl, 1783) ( Prunellamodularis)
- obscura Zarudny & Loudon, 1905 ( Sittatephronota)
- obscura Zimmer, 1932 ( Myrmotherulaignota)
- obscura Zimmer & Phelps, 1946 ( Schistocichlasaturata)
- obscura Phelps & Phelps, 1952 ( Diglossacyanea)
- obscura Naumburg, 1924 ( Thraupissayaca)
- obscura Baker, 1917 ( Stachyridopsisrufifrons)
- obscura (Orbigny & Lafresnaye, 1837) (Elaenia)
- obscura Zimmer, 1939 ( Ineziasubflava)
- obscura Zimmer & Phelps, 1946 ( Pyrrhuraegregia)
- obscura Hume, 1872 (Ninox)
- obscurata Fjeldsa & Kiure, 2003 (Xenoperdix)
- obscurata (Hartert, 1907) ( Chersomanesalbofasciata)
- obscurata Zimmer, 1932 ( Myrmecizaatrothorax)
- obscurata Mayr, 1942 ( Stachyrisleucotis)
- obscuratus (Mayr, 1940) ( Aegithalosbonvaloti)
- obscuratus Cabanis, 1873 ( Lochmiasnematura)
- obscuratus Stresemann, 1929 ( Phylloscopustrochiloides)
- obscuratus Chapman, 1927 ( Picoidesfumigatus)
- obscuriceps Phelps & Phelps, 1953 ( Thlypopsisfulviceps)
- obscuriceps Zimmer, 1939 ( Tolmomyiasassimilis)
- obscuriceps Zimmer & Phelps, 1947 ( Brachygalbalugubris)
- obscurifrons Junge, 1952 ( Dicaeumgeelvinkianum)
- obscurior (Hume, 1874) ( Gallirallusstriatus)
- obscurior Rothschild & Hartert, 1917 ( Lalageleucomela)
- obscurior Mayr, 1947 ( Orthotomuscinereiceps)
- obscurior Hartert, 1901 ( Sclerurusmexicanus)
- obscurior Todd, 1948 ( Synallaxismacconnelli)
- obscurior Buturlin, 1929 ( Locustellanaevia)
- obscurior Mayr, 1935 ( Monarchacastaneiventris)
- obscurior Ogilvie-Grant, 1894 ( Cinnyrisjugularis)
- obscurior Hartert, 1896 ( Pachycephalaschlegelii)
- obscurior Deignan, 1948 ( Malacocinclaabbotti)
- obscurior Todd, 1925 ( Myiozetetesgranadensis)
- obscurior Todd, 1920 (Sublegatus)
- obscurior Rothschild, 1921 ( Yuhinaoccipitalis)
- obscuripectus Zimmer & Phelps, 1945 ( Mitrospingusoleagineus)
- obscuritergum Zimmer & Phelps, 1946 ( Leptopogonamaurocephalus)
- obscurodorsalis Phelps & Phelps, 1948 ( Roraimiaadusta)
- obscurodorsalis Phelps & Phelps, 1948 ( Machetornisrixosa)
- obscurostriatus Phelps & Gilliard, 1941 ( Machaeropterusstriolatus)
- obscurum Ogilvie-Grant, 1894 ( Dicaeumhypoleucum)
- obscurus Gould, 1848 ( Campylopteruslargipennis)
- obscurus Gmelin, 1789 (Charadrius)
- obscurus Nelson, 1911 ( Hylomanesmomotula)
- obscurus (Say, 1822) (Dendragapus)
- obscurus (Verreaux, 1869) (Tetraophasis)
- obscurus Prjevalsky, 1887 ( Leptopoecilesophiae)
- obscurus Ridgway, 1874 ( Perisoreuscanadensis)
- obscurus (Gmelin, 1788) (Hemignathus)
- obscurus (Pelzeln, 1859) ( Automolusrubiginosus)
- obscurus (Gmelin, 1789) ( Molothrusater)
- obscurus Nelson, 1900 ( Quiscalusmexicanus)
- obscurus Delacour & Jabouille, 1930 ( Garrulaxmerulinus)
- obscurus (De Vis, 1897) (Lichenostomus)
- obscurus Rand, 1940 ( Rhagologusleucostigma)
- obscurus (Prazak, 1894) ( Cyanistescaeruleus)
- obscurus Zimmer, 1931 ( Ramphocaenusmelanurus)
- obscurus Todd, 1927 ( Hylophylaxnaevius)
- obscurus Zimmer, 1933 ( Tarabamajor)
- obscurus Zimmer, 1933 ( Thamnophilusamazonicus)
- obscurus (Orbigny & Lafresnaye, 1837) (Tiaris)
- obscurus Hume, 1872 ( Pomatorhinushorsfieldii)
- obscurus Zimmer & Phelps, 1946 ( Microcerculusustulatus)
- obscurus (Zimmer & Phelps, 1947) ( Pheugopediuscoraya)
- obscurus (Gmelin, 1789) (Myadestes)
- obscurus Gmelin, 1789 (Turdus)
- obscurus (Dickey & Van Rossem, 1925) ( Mionectesoleagineus)
- obscurus (Zimmer, 1940) ( Poecilotriccusplumbeiceps)
- obscurus Gould, 1839 ( Pyrocephalusrubinus)
- obscurus Bonaparte, 1855 ( Nycticoraxnycticorax)
- obscurus (La Touche, 1921) ( Dendrocoposcanicapillus)
- obscurus (Phelps & Phelps, 1953) ( Megascopsalbogularis)
- observandus (Hartert, 1896) ( Picuspuniceus)
- obsoleta Zimmer, 1950 ( Chlorestesnotata)
- obsoleta (Zimmer, 1924) ( Metriopeliaceciliae)
- obsoleta (Lichtenstein, 1823) (Rhodospiza)
- obsoleta (Reichenbach, 1853) (Cranioleuca)
- obsoleta Chubb, 1916 ( Grallarianuchalis)
- obsoleta (Cabanis, 1850) (Ptyonoprogne)
- obsoletum (Muller, 1843) ( Dicaeumagile)
- obsoletum (Temminck, 1824) (Camptostoma)
- obsoletus (Richmond, 1902) ( Accipiterbutleri)
- obsoletus Ridgway, 1874 ( Ralluslongirostris)
- obsoletus Zimmer, 1924 ( Xenopsminutus)
- obsoletus Todd, 1917 ( Xiphocolaptespromeropirhynchus)
- obsoletus (Lichtenstein, 1820) (Xiphorhynchus)
- obsoletus (Say, 1822) (Salpinctes)
- obsoletus Lawrence, 1862 (Turdus)
- obsoletus (Ribeiro, 1905) (Hemitriccus)
- obsoletus (Wagler, 1829) (Dendropicos)
- obsoletus Allen, 1892 ( Picumnussquamulatus)
- obsoletus (Cabanis, 1875) ( Otusbrucei)
- obsoletus (Temminck, 1815) (Crypturellus)
- obstinatus Hartert, 1900 ( Zosteropsmontanus)
- obtusa (Chapin, 1922) (Vidua)
- ocai (Lawrence, 1865) (Pipilo)
- occabambae (Chapman, 1923) ( Grallariarufula)
- occasa Ripley, 1957 ( Gerygonemagnirostris)
- occidens Lynes, 1930 ( Cisticolaeximius)
- occidentale (Ridgway, 1882) ( Toxostomacurvirostre)
- occidentalis Salvin, 1876 (Leucopternis)
- occidentalis (Baird, 1858) ( Brantacanadensis)
- occidentalis Berlepsch & Taczanowski, 1884 ( Chaeturacinereiventris)
- occidentalis (Cabanis, 1872) ( Charadriusnivosus)
- occidentalis Audubon, 1839 (Larus)
- occidentalis (Stolzmann, 1926) ( Patagioenascayennensis)
- occidentalis Schodde, 1989 ( Phapselegans)
- occidentalis Gould, 1870 ( Daceloleachii)
- occidentalis Neumann, 1908 ( Centropusmonachus)
- occidentalis (Gould, 1844) ( Falcoberigora)
- occidentalis Delacour, 1948 ( Lophuranycthemera)
- occidentalis Bonaparte, 1850 ( Smicrornisbrevirostris)
- occidentalis (Hartlaub, 1857) ( Mirafraafricana)
- occidentalis Ridgway, 1882 ( Certhiaamericana)
- occidentalis Chubb, 1918 ( Conopophagaaurita)
- occidentalis Ticehurst, 1925 ( Dendrocittaformosae)
- occidentalis (Chapman, 1914) ( Pipreolariefferii)
- occidentalis Chapman, 1914 ( Pyroderusscutatus)
- occidentalis Hellmayr, 1911 ( Arremonaurantiirostris)
- occidentalis Jardine, 1852 ( Estrildaastrild)
- occidentalis Todd, 1927 ( Grallariculanana)
- occidentalis Berlepsch & Stolzmann, 1892 ( Molothrusbonariensis)
- occidentalis (Hartert, 1909) ( Garrulaxrufogularis)
- occidentalis Cabanis, 1851 ( Lichenostomuscratitius)
- occidentalis Junge, 1939 ( Melidectesfuscus)
- occidentalis Rand, 1940 ( Ptiloprorameekiana)
- occidentalis Mayr, 1931 ( Myiagracaledonica)
- occidentalis (Townsend, 1837) (Dendroica)
- occidentalis Brewster, 1883 ( Geothlypistrichas)
- occidentalis Rand, 1940 ( Amalocichlasclateriana)
- occidentalis Rothschild & Hartert, 1903 ( Microecagriseoceps)
- occidentalis (Hartert, 1910) ( Prunellamodularis)
- occidentalis (Mathews, 1912) (Psophodes)
- occidentalis Sharpe, 1882 ( Chlorocichlaflaviventris)
- occidentalis (Chapman, 1923) (Dysithamnus)
- occidentalis Zimmer, 1932 ( Hypocnemoidesmelanopogon)
- occidentalis Cherrie, 1891 ( Myrmecizaexsul)
- occidentalis Sclater, 1860 ( Oryzoborusmaximiliani)
- occidentalis Carriker, 1932 ( Sicaliscitrina)
- occidentalis Chapman, 1914 ( Tangaraarthus)
- occidentalis (Sclater, 1855) ( Tersinaviridis)
- occidentalis Robinson & Kloss, 1923 ( Pomatorhinusmontanus)
- occidentalis (Sclater, 1860) (Onychorhynchus)
- occidentalis Sclater, 1859 (Catharus)
- occidentalis Stejneger, 1882 (Myadestes)
- occidentalis Nelson, 1897 (Empidonax)
- occidentalis Zimmer, 1937 ( Myiozetetesgranadensis)
- occidentalis Delacour, 1931 ( Schetbarufa)
- occidentalis Harington, 1913 ( Pteruthiusxanthochlorus)
- occidentalis Audubon, 1835 ( Ardeaherodias)
- occidentalis (Huey, 1927) ( Egrettatricolor)
- occidentalis Linnaeus, 1766 (Pelecanus)
- occidentalis Chapman, 1914 ( Eubuccobourcierii)
- occidentalis (Hargitt, 1889) ( Celeustorquatus)
- occidentalis Chapman, 1915 ( Andigenanigrirostris)
- occidentalis (Lawrence, 1858) (Aechmophorus)
- occidentalis (Gould, 1861) (Pezoporus)
- occidentalis (Salvadori, 1876) ( Psittaculirostrisdesmarestii)
- occidentalis (Xantus de Vesey, 1860) (Strix)
- occidentalis (Salvadori, 1895) ( Crypturelluscinnamomeus)
- occidentalis Pinto, 1950 ( Trogonmelanurus)
- occidentis White, 1938 ( Talegallafuscirostris)
- occidentis Clancey, 1968 ( Pinarocorysnigricans)
- occiduus Bangs, 1911 ( Rupornismagnirostris)
- occipitalis (Daudin, 1800) (Lophaetus)
- occipitalis (Burchell, 1824) (Trigonoceps)
- occipitalis (Salvadori, 1893) ( Phapitreronleucotis)
- occipitalis Gray, 1844 (Ptilinopus)
- occipitalis Blyth, 1846 ( Todiramphuschloris)
- occipitalis (Muller, 1836) (Dendrocitta)
- occipitalis (Blyth, 1846) ( Urocissaerythroryncha)
- occipitalis (Salvin, 1878) ( Melozoneleucotis)
- occipitalis (Du Bus de Gisignies, 1847) (Chlorophonia)
- occipitalis Madarasz, 1903 ( Synallaxisalbescens)
- occipitalis (Blyth, 1845) (Phylloscopus)
- occipitalis Zimmer, 1932 ( Pygiptilastellaris)
- occipitalis Ridgway, 1887 ( Muscisaxicolarufivertex)
- occipitalis Hodgson, 1836 (Yuhina)
- occipitalis Garnot, 1826 (Podiceps)
- occisinensis Martens, Sun & Packert, 2008 (Phylloscopus)
- occularis Bourns & Worcester, 1894 ( Rhinomyiasruficauda)
- occulta (Zimmer, 1936) ( Dixiphiapipra)
- occulta Lawson, 1984 ( Batispoensis)
- occulta Imber,MJ & Tennyson, 2001 (Pterodroma)
- occultum Moore, 1947 ( Glaucidiumgriseiceps)
- occultus Zimmer, 1949 ( Basileuterusculicivorus)
- oceanica (Lesson & Garnot, 1826) (Ducula)
- oceanica Pucheran, 1853 (Myiagra)
- oceanicus (Kuhl, 1820) (Oceanites)
- Oceanites Keyserling & Blasius, 1840 (Hydrobatidae)
- Oceanodroma Reichenbach, 1853 (Hydrobatidae)
- ocellata Gould, 1840 (Leipoa)
- ocellata Cuvier, 1820 (Meleagris)
- ocellata (Elliot, 1871) (Rheinardia)
- ocellata (Bonaparte, 1850) ( Ninoxboobook)
- ocellata (Lesson, 1839) (Strix)
- ocellatum (Sclater, 1862) (Toxostoma)
- ocellatus (Tschudi, 1844) (Nyctiphrynus)
- ocellatus Quoy & Gaimard, 1830 (Podargus)
- ocellatus (Scopoli, 1786) (Turnix)
- ocellatus (Gould, 1837) (Cyrtonyx)
- ocellatus (Raffles, 1822) ( Caloperdixoculeus)
- ocellatus (Spix, 1824) (Xiphorhynchus)
- ocellatus (Vigors, 1831) (Garrulax)
- Ochetorhynchus Meyen, 1834 (Furnariidae)
- ochotensis (Middendorff, 1853) (Locustella)
- ochoterena Van Rossem, 1934 ( Claravismondetoura)
- ochra Deignan, 1948 ( Aethopygasaturata)
- ochracea Rothschild & Hartert, 1901 ( Symatorotoro)
- ochracea Brewster, 1882 ( Spizellaarborea)
- ochracea Zimmer, 1936 ( Synallaxisazarae)
- ochracea Hodgson, 1837 (Sasia)
- ochracea (Schlegel, 1866) (Ninox)
- ochraceiceps Walden, 1873 (Pomatorhinus)
- ochraceiceps Sclater, 1860 (Hylophilus)
- ochraceicrista Chapman, 1921 ( Basileuterusfraseri)
- ochraceifrons Graves, O'Neill & Parker, 1983 (Grallaricula)
- ochraceiventer Snethlage, 1928 ( Thamnophiluscaerulescens)
- ochraceiventris Hellmayr, 1907 ( Phaethornismalaris)
- ochraceiventris Chapman, 1914 (Leptotila)
- ochraceiventris Berlepsch, 1912 ( Saltatorsimilis)
- ochraceiventris Nelson, 1898 ( Grallariaguatimalensis)
- ochraceiventris Chapman, 1922 ( Grallariculaflavirostris)
- ochraceiventris Chapman, 1921 ( Hypocnemishypoxantha)
- ochraceiventris (Cabanis, 1873) (Nephelomyias)
- ochraceiventris (Stolzmann, 1926) ( Crypturellusobsoletus)
- ochraceus (Cory, 1915) ( Falcosparverius)
- ochraceus Rothschild, 1893 ( Loxopscoccineus)
- ochraceus (Moore, 1854) (Alophoixus)
- ochraceus (Berlepsch, 1912) ( Hylophylaxnaevius)
- ochraceus (Berlepsch & Taczanowski, 1884) (Hemispingus)
- ochraceus Ridgway, 1882 (Troglodytes)
- ochraceus Sclater & Salvin, 1869 (Contopus)
- ochraceus Salvin, 1863 ( Vireopallens)
- ochraceus (Spix, 1824) ( Celeusflavescens)
- ochrascens Hellmayr, 1904 ( Sporophilacollaris)
- ochrocephala (Gmelin, 1789) (Mohoua)
- ochrocephala Tschudi, 1845 ( Cyclarhisgujanensis)
- ochrocephala (Gmelin, 1788) (Amazona)
- ochrochrous Schodde & Mason, 1999 ( Zosteropslateralis)
- ochrogaster (Reichenow, 1903) ( Ceyxazureus)
- ochrogaster Pelzeln, 1870 (Penelope)
- ochrogaster Schodde & Mason, 1999 ( Smicrornisbrevirostris)
- ochrogaster Salvadori, 1897 (Estrilda)
- ochrogaster Hellmayr, 1917 ( Philydorerythrocercum)
- ochrogaster Zimmer, 1935 ( Synallaxisunirufa)
- ochrogenys (Hume, 1873) ( Strixleptogrammica)
- ochrogularis (Moreau, 1941) ( Phylloscopusruficapilla)
- ochrogyna Snethlage, 1928 ( Cercomacranigrescens)
- ochrogyna Zimmer, 1932 (Hypocnemis)
- ochrogyna Todd, 1927 ( Myrmotherulalongipennis)
- ochrogyne (Olson, 1981) ( Oryzoborusfunereus)
- ochrolaemus (Tschudi, 1844) (Automolus)
- ochrolaemus (Hellmayr, 1906) ( Myrmoborusmyotherinus)
- ochroleuca Olrog, 1959 ( Pseudoseisuragutturalis)
- ochroleucus (Wied-Neuwied, 1831) (Hylopezus)
- ochromalus Raffles, 1822 (Eurylaimus)
- ochromelas (Meyer, 1874) (Melidectes)
- ochropectus (Dorst & Jouanin, 1952) (Pternistis)
- ochroptera Pelzeln, 1857 ( Psophialeucoptera)
- ochropterus (Allen, 1889) ( Poecilotriccuslatirostris)
- ochropus Linnaeus, 1758 (Tringa)
- ochropyga (Hellmayr, 1906) (Drymophila)
- ochruros (Gmelin, 1774) (Phoenicurus)
- Ochthoeca Cabanis, 1847 (Tyrannidae)
- Ochthornis Sclater, 1888 (Tyrannidae)
- ocistus (Oberholser, 1906) (Aerodramus)
- ockendeni Hellmayr, 1906 ( Turdusfuscater)
- ocreata (Strickland, 1844) (Fraseria)
- Ocreatus Gould, 1846 (Trochilidae)
- octaviae Amadon, 1953 ( Cyanomitracyanolaema)
- octogenarii Diamond, 1985 ( Pachycephalasoror)
- octosetaceus Vieillot, 1817 (Mergus)
- ocularis Verreaux, 1833 (Glareola)
- ocularis Mayr, 1931 ( Ptilinopussolomonensis)
- ocularis (Reichenow, 1900) ( Meropspusillus)
- ocularis (Gould, 1838) ( Lichmeraindistincta)
- ocularis Swinhoe, 1860 ( Motacillaalba)
- ocularis Smith, 1828 (Ploceus)
- ocularis (Radde, 1884) (Prunella)
- ocularis Mayr, 1931 ( Rhipiduradrownei)
- ocularis Nelson, 1912 ( Chrysothlypischrysomelas)
- ocularis Sclater, 1859 ( Phrygilusplebejus)
- ocularis (Sclater, 1865) ( Aratingapertinax)
- ocularius (Smith, 1843) ( Malcoruspectoralis)
- oculata (Quoy & Gaimard, 1830) (Stagonopleura)
- oculeus (Temminck, 1815) (Caloperdix)
- oculeus (Hartlaub, 1855) (Canirallus)
- Oculocincta Mees, 1953 (Zosteropidae)
- Ocyalus Waterhouse, 1841 (Icteridae)
- Ocyceros Hume, 1873 (Bucerotidae)
- ocypetes Zimmer, 1953 ( Chaeturabrachyura)
- Ocyphaps Gray, 1842 (Columbidae)
- odica Clancey, 1962 ( Thamnolaeacinnamomeiventris)
- odicus Bangs & Phillips, 1914 ( Pomatorhinusgravivox)
- odicus (Wetmore, 1959) ( Cantorchilusnigricapillus)
- odiosa Sclater, 1877 (Ninox)
- odites (Peters, 1945) ( Todiramphusaustralasia)
- odomae Graves, 1980 (Metallura)
- Odontophoridae (Galliformes)
- Odontophorus Vieillot, 1816 (Odontophoridae)
- Odontorchilus Richmond, 1915 (Troglodytidae)
- Odontospiza Oberholser, 1905 (Estrildidae)
- oecotonophilus Borrero & Hernandez-Camacho, 1958 ( Thamnophilusmultistriatus)
- oedicnemus (Linnaeus, 1758) (Burhinus)
- Oedistoma Salvadori, 1876 (Melanocharitidae)
- Oena Swainson, 1837 (Columbidae)
- Oenanthe Vieillot, 1816 (Muscicapidae)
- oenanthe (Linnaeus, 1758) (Oenanthe)
- oenanthoides (Orbigny & Lafresnaye, 1837) (Ochthoeca)
- oenas Linnaeus, 1758 (Columba)
- oeneicaudus Verreaux & Verreaux, 1855 ( Phaenicophaeuscurvirostris)
- oenochlamys (Sharpe, 1877) (Sitta)
- oenone (Lesson, 1832) (Chrysuronia)
- oenops (Salvin, 1895) (Patagioenas)
- oenops (Sclater,PL & Salvin, 1880) ( Laterallusmelanophaius)
- oenothorax (Salvadori, 1892) ( Duculaaenea)
- ofella Buden, 1986 ( Loxigillaviolacea)
- ogawae Hartert, 1907 ( Hypsipetesamaurotis)
- ogawae (Hartert, 1910) ( Nannustroglodytes)
- ogilviegranti (Chubb, 1917) ( Patagioenassubvinacea)
- ogilviegranti (Bannerman, 1922) ( Pternistisbicalcaratus)
- ogilviegranti (La Touche, 1922) (Phylloscopus)
- oglei (Godwin-Austen, 1877) (Stachyris)
- ogliastrae (Hartert, 1905) ( Cyanistescaeruleus)
- Ognorhynchus Bonaparte, 1857 (Psittacidae)
- ogoensis (Mackworth-Praed, 1920) ( Pternistiscastaneicollis)
- okadai Momiyama, 1928 ( Lagopuslagopus)
- okavangensis Roberts, 1932 ( Dryoscopuscubla)
- okavangoensis Payne, 1973 ( Viduachalybeata)
- okinavensis Phillips, 1947 ( Turnixsuscitator)
- okinawae (Yamashina & Mano, 1981) (Gallirallus)
- okinawae Hartert, 1905 ( Parusminor)
- okuensis Serle, 1949 ( Phoeniculusbollei)
- okyri Schodde & Mason, 1999 ( Myiagrarubecula)
- olallae (Gyldenstolpe, 1945) ( Campephilusrubricollis)
- olallai Coopmans & Krabbe, 2000 (Myiopagis)
- olax (Temminck, 1823) (Treron)
- oldeani Sclater & Moreau, 1935 ( Turdusabyssinicus)
- oleacea (Griscom, 1932) ( Carduelisnotata)
- oleaginea (Sclater, 1884) ( Syndactylarufosuperciliata)
- oleaginea Neumann, 1904 ( Psalidoprocnepristoptera)
- oleagineus (Sclater, 1883) ( Psarocoliusangustifrons)
- oleagineus (Salvin, 1886) (Mitrospingus)
- oleagineus (Lichtenstein, 1823) (Mionectes)
- oleagineus Hartlaub & Finsch, 1872 (Zosterops)
- oleagineus (Reichenbach, 1854) ( Picoidesfumigatus)
- oleaginus Peters, 1868 ( Andropadusimportunus)
- olimotiensis Elliott, 1945 ( Pinarochroasordida)
- olivacea (Delacour & Jabouille, 1928) ( Arborophilachloropus)
- olivacea (Meyen, 1834) (Amaurornis)
- olivacea (Vieillot, 1819) ( Porzanaalbicollis)
- olivacea (Gould, 1838) (Gerygone)
- olivacea Tschudi, 1844 ( Chamaezacampanisona)
- olivacea (Berlepsch & Stolzmann, 1894) (Carduelis)
- olivacea Phelps & Phelps, 1956 ( Syndactylasubalaris)
- olivacea Mayr, 1938 ( Lichmeraalboauricularis)
- olivacea (Smith, 1840) (Cyanomitra)
- olivacea Vigors & Horsfield, 1827 (Pachycephala)
- olivacea Oort, 1910 ( Paramythiamontium)
- olivacea Styan, 1896 ( Alcippebrunnea)
- olivacea (Strickland, 1847) ( Malacocinclaabbotti)
- olivacea Blyth, 1844 (Iole)
- olivacea Gould, 1837 (Certhidea)
- olivacea (Cassin, 1860) (Chlorothraupis)
- olivacea (Gmelin, 1789) (Piranga)
- olivacea (Ridgway, 1906) ( Schiffornisturdina)
- olivacea (Du Bus de Gisignies, 1838) (Bostrychia)
- olivacea (Shelley, 1880) (Stactolaema)
- olivaceiceps (Sharpe, 1873) ( Couaruficeps)
- olivaceiceps Underwood, 1898 ( Chlorospinguscanigularis)
- olivaceiceps (Reichenow, 1899) (Ploceus)
- olivaceiceps (Shelley, 1896) (Arizelocichla)
- olivaceiceps (Berlepsch, 1912) ( Anisognathuslacrymosus)
- olivaceofuscus Hartlaub, 1852 (Turdus)
- olivaceogriseus Reichenow, 1908 ( Phyllastrephusflavostriatus)
- olivaceum (Lawrence, 1864) (Chalcostigma)
- olivaceum Walden, 1875 ( Dicaeumminullum)
- olivaceum Jerdon, 1839 ( Pellorneumruficeps)
- olivaceum (Berlepsch, 1889) ( Camptostomaobsoletum)
- olivaceum (Lawrence, 1862) (Oncostoma)
- olivaceum Chapman, 1939 ( Glaucidiumbrasilianum)
- olivaceus Tweeddale, 1877 (Prionochilus)
- olivaceus Zimmer, 1931 ( Formicariusanalis)
- olivaceus (Fraser, 1843) (Linurgus)
- olivaceus Griscom, 1927 ( Campylorhamphuspusillus)
- olivaceus Zimmer, 1934 ( Dendrocolaptespicumnus)
- olivaceus Wied-Neuwied, 1831 ( Sittasomusgriseicapillus)
- olivaceus Aveledo & Pons, 1952 ( Xenopsminutus)
- olivaceus (Shaw, 1809) (Chlorophoneus)
- olivaceus (Hume, 1877) (Rhinomyias)
- olivaceus (Kuroda, 1923) ( Poecilevarius)
- olivaceus (Moseley, 1891) (Phylloscopus)
- olivaceus (Hahn, 1820) ( Ploceuscapensis)
- olivaceus (Latham, 1802) (Psophodes)
- olivaceus (Swainson, 1837) (Criniger)
- olivaceus Jardine & Selby, 1837 (Hypsipetes)
- olivaceus Baird, 1864 ( Regulussatrapa)
- olivaceus Rothschild, 1923 ( Cephalopyrusflammiceps)
- olivaceus (Tschudi, 1844) ( Dysithamnusmentalis)
- olivaceus (Linnaeus, 1766) (Tiaris)
- olivaceus Blyth, 1847 ( Pomatorhinusschisticeps)
- olivaceus Linnaeus, 1766 (Turdus)
- olivaceus Lawrence, 1868 (Mionectes)
- olivaceus Berlepsch & Stolzmann, 1894 (Mitrephanes)
- olivaceus (Phelps & Phelps, 1953) ( Myiotheretesfumigatus)
- olivaceus (Temminck, 1820) (Rhynchocyclus)
- olivaceus Tschudi, 1844 (Hylophilus)
- olivaceus (Linnaeus, 1766) (Vireo)
- olivaceus (Linnaeus, 1766) (Zosterops)
- olivaceus (Gmelin, 1788) (Geocolaptes)
- olivaceus Lafresnaye, 1845 (Picumnus)
- olivacina (Peters, 1881) ( Cyanomitraolivacea)
- olivaresi Stiles, 1996 (Chlorostilbon)
- olivaresi Hernandez-Camacho & Romero-Zambrano, 1978 ( Momotussubrufescens)
- olivascens Chubb, 1918 ( Neocrexerythrops)
- olivascens Cabanis, 1848 ( Saltatorcoerulescens)
- olivascens (Clancey, 1969) ( Calamonastesstierlingi)
- olivascens Zimmer, 1934 ( Dendrocinclamerula)
- olivascens Cabanis, 1873 ( Scleruruscaudacutus)
- olivascens Hellmayr, 1917 ( Grallariculanana)
- olivascens (Cassin, 1859) (Muscicapa)
- olivascens Chapman, 1893 ( Basileuterusculicivorus)
- olivascens (Ridgway, 1891) ( Gymnopithysleucaspis)
- olivascens Orbigny, 1839 ( Embernagraplatensis)
- olivascens (Orbigny& Lafresnaye, 1837) (Sicalis)
- olivascens Sharpe, 1882 (Cinnycerthia)
- olivascens Nelson, 1899 ( Catharusoccidentalis)
- olivascens (Todd, 1915) ( Hemitriccusflammulatus)
- olivascens Ridgway, 1884 ( Myiarchustuberculifer)
- olivascens (Hartert, 1909) ( Pteroclesexustus)
- olivascens Conover, 1937 ( Tinamusmajor)
- olivascentior Hartert, 1930 ( Amalocichlaincerta)
- olivater (Lafresnaye, 1848) (Turdus)
- olivea (McClelland, 1840) (Tesia)
- oliveri Mathews, 1930 ( Phalacrocoraxpunctatus)
- olivetorum (Strickland, 1837) (Hippolais)
- oliviae Clarke, 1918 (Columba)
- olivicyanea (Lafresnaye, 1843) ( Thraupiscyanocephala)
- olivieri (Grandidier,G & Berlioz, 1929) (Amaurornis)
- olivii Robinson, 1900 (Turnix)
- olivina (Sclater, 1865) ( Schistochlamysmelanopis)
- olivina Salvin & Godman, 1884 ( Elaeniapallatangae)
- olivinus Sassi, 1912 (Cercococcyx)
- olivinus (Natterer & Malherbe, 1845) ( Veniliornispasserinus)
- olmecorum Dickerman, 1981 ( Euphoniaaffinis)
- olor (Gmelin, 1789) (Cygnus)
- olrogi Amadon, 1964 ( Micrasturruficollis)
- olrogi Nores & Yzurieta, 1979 (Cinclodes)
- olympicus Madarasz, 1903 ( Cincluscinclus)
- omalurus Blyth, 1851 ( Cisticolajuncidis)
- ombriosa (Rothschild & Hartert, 1905) ( Coracinalineata)
- ombriosa Hartert, 1913 ( Fringillacoelebs)
- ombriosus (Meade-Waldo, 1890) ( Cyanistesteneriffae)
- omeiensis Cheng, Chang & Tang, 1964 ( Lophuranycthemera)
- omeiensis Riley, 1926 (Liocichla)
- omeiensis Martens, Eck, Packert & Sun, 1999 (Seicercus)
- omeiensis Riley, 1930 ( Yuhinagularis)
- omiltemensis Nelson, 1903 ( Xiphocolaptespromeropirhynchus)
- omiltemensis Ridgway, 1905 ( Catharusfrantzii)
- omissa Zimmer, 1948 ( Coeligenatorquata)
- omissa Rothschild, 1921 ( Emberizagodlewskii)
- omissa Hartert, 1913 ( Euphoniafulvicrissa)
- omissa Hartert, 1901 ( Synallaxisrutilans)
- omissa Rothschild, 1912 (Foudia)
- omissa Todd, 1927 ( Myrmotherulamenetriesii)
- omissus Pinto, 1933 ( Campylorhamphustrochilirostris)
- omissus (Hartert, 1896) (Cyornis)
- omissus Jardine, 1847 ( Tiarisbicolor)
- omissus (Rothschild, 1922) ( Dendrocoposcanicapillus)
- omissus Dementiev, 1933 ( Bubobubo)
- omo Neumann & Lynes, 1928 ( Cisticolarobustus)
- omoensis Neumann, 1928 ( Mirafrarufocinnamomea)
- omoensis Neumann, 1905 ( Emberizaaffinis)
- omoensis (Neumann, 1903) ( Turdoidesleucopygia)
- omoensis Neumann, 1906 ( Anthusleucophrys)
- omoensis (Neumann, 1904) ( Cercomelafamiliaris)
- omoensis Sharpe, 1900 ( Cossyphaalbicapillus)
- omoensis (Neumann, 1905) ( Phylloscopusumbrovirens)
- omoensis Neumann, 1904 ( Zosteropsabyssinicus)
- Oncostoma Sclater, 1862 (Tyrannidae)
- oneho Bartle & Sagar, 1987 ( Anthornismelanura)
- oneilli Lowery & Tallman, 1976 (Nephelornis)
- onerosa Hartert, 1899 ( Gerygonemagnirostris)
- onguati Macdonald, 1957 ( Streptopeliacapicola)
- onocrotalus Linnaeus, 1758 (Pelecanus)
- onslowi (Forbes, 1893) (Leucocarbo)
- Onychognathus Hartlaub, 1849 (Sturnidae)
- Onychoprion Wagler, 1832 (Laridae)
- Onychorhynchus Fischer von Waldheim, 1810 (Tityridae)
- Onychostruthus Richmond, 1917 (Passeridae)
- oorti Rothschild & Hartert, 1913 ( Sericornisnouhuysi)
- oorti Rothschild & Hartert, 1907 ( Clytomyiasinsignis)
- oorti (Muller, 1836) (Megalaima)
- opaca (Cabanis, 1850) (Iduna)
- opaca (Kittlitz, 1833) (Aplonis)
- opaca (Peters, 1943) ( Strixalbitarsis)
- opacus Zimmer, 1941 (Scytalopus)
- opertaneus Wetmore, 1955 ( Catharusfuscater)
- ophryophanes (Salvadori, 1895) ( Falcorufigularis)
- ophthalmica (Sclater, 1860) ( Sporophilacorvina)
- ophthalmica Sclater, 1864 (Cacatua)
- ophthalmicus (Du Bus de Gisignies, 1847) (Chlorospingus)
- ophthalmicus Taczanowski, 1874 (Pogonotriccus)
- opistherythra Sclater, 1883 (Rhipidura)
- Opisthocomidae Swainson, 1837 (Opisthocomiformes)
- Opisthocomiformes (Aves:class)
- Opisthocomus Illiger, 1811 (Opisthocomidae)
- opisthocyanea Oberholser, 1911 ( Hypothymisazurea)
- opisthomelas Coues, 1864 (Puffinus)
- Opisthoprora Cabanis & Heine, 1860 (Trochilidae)
- Oporornis Baird, 1858 (Parulidae)
- oppenheimi Neumann, 1915 ( Sturnusvulgaris)
- optata Hartlaub, 1866 ( Pachycephalagraeffii)
- optatus Gould, 1845 (Cuculus)
- opthalmicus Castelnau & Ramsay, 1877 ( Haematopusfuliginosus)
- opuntia Burleigh & Lowery, 1939 ( Amphispizabilineata)
- orangensis Roberts, 1937 ( Crithagraalbogularis)
- oraria Parkes & Dickerman, 1967 ( Dendroicapetechia)
- oratrix Ridgway, 1887 (Amazona)
- orbignyianus Geoffroy Saint-Hilaire & Lesson, 1831 (Thinocorus)
- orbitalis (Wahlberg, 1854) ( Sylviaconspicillata)
- orbitalis (Cabanis, 1873) (Pogonotriccus)
- orbitatus (Wied-Neuwied, 1831) (Hemitriccus)
- orbygnesius (Souance, 1856) (Bolborhynchus)
- orcesi Ridgely & Robbins, 1988 (Pyrrhura)
- Orchesticus Cabanis, 1851 (Thraupidae)
- ordii (Cassin, 1851) (Notharchus)
- oreas Wetmore, 1950 ( Geotrygongoldmani)
- oreas Reichenow, 1899 (Picathartes)
- oreas (Sclater & Salvin, 1869) (Lessonia)
- oregonus Bell, 1849 ( Pipilomaculatus)
- oreinus Behle & Selander, 1951 ( Dendragapusobscurus)
- orenocensis Hellmayr, 1921 ( Thaluraniafurcata)
- orenocensis Lafresnaye, 1846 (Saltator)
- orenocensis (Lafresnaye, 1846) ( Pyroderusscutatus)
- orenocensis Zimmer, 1935 ( Certhiaxiscinnamomeus)
- orenocensis Berlepsch & Hartert, 1902 ( Xiphocolaptespromeropirhynchus)
- orenocensis Hellmayr, 1904 ( Formicivoraintermedia)
- orenocensis Berlepsch, 1884 (Knipolegus)
- orenocensis Berlepsch & Hartert, 1902 ( Veniliornisaffinis)
- oreobates Brooke, 1970 ( Apusbarbatus)
- oreobates (Sharpe, 1892) (Merops)
- oreobates Irwin, 1966 ( Cisticolalais)
- oreobates Scott, 1900 ( Cinclodesalbidiventris)
- oreobates Clancey, 1956 ( Saxicolatorquatus)
- Oreocharis Salvadori, 1876 (Paramythiidae)
- Oreoica Gould, 1838 (Pachycephalidae)
- Oreolais Nguembock, Fjeldsa, Couloux, Cruaud & Pasquet, 2008 (Cisticolidae)
- Oreomanes Sclater, 1860 (Thraupidae)
- Oreomystis Stejneger, 1903 (Fringillidae)
- Oreonympha Gould, 1869 (Trochilidae)
- Oreophasis Gray, 1844 (Cracidae)
- oreophila Sharpe, 1888 ( Cettiavulcania)
- oreophila (Oberholser, 1900) ( Oenanthedeserti)
- oreophila Todd, 1913 ( Catameniahomochroa)
- Oreophilais Clancey, 1991 (Cisticolidae)
- oreophilus Hartert & Neumann, 1914 (Buteo)
- oreophilus Hartert, 1925 ( Cacomantisvariolosus)
- oreophilus Someren, 1922 ( Cisticolatinniens)
- oreophilus Mayr, 1931 ( Zosteropsnovaeguineae)
- Oreopholus Jardine & Selby, 1835 (Charadriidae)
- oreopola Todd, 1913 ( Metalluratyrianthina)
- oreopsar Lowther, 2001 (Agelaioides)
- Oreopsittacus Salvadori, 1877 (Psittacidae)
- Oreornis Oort, 1910 (Meliphagidae)
- Oreortyx Baird, 1858 (Odontophoridae)
- Oreoscoptes Baird, 1858 (Mimidae)
- Oreoscopus North, 1905 (Acanthizidae)
- Oreostruthus De Vis, 1898 (Estrildidae)
- Oreothlypis Ridgway, 1884 (Parulidae)
- Oreothraupis Sclater, 1856 (Thraupidae)
- Oreotrochilus Gould, 1847 (Trochilidae)
- oresbia Wetmore, 1962 ( Tangaraicterocephala)
- oreskios (Temminck, 1823) (Harpactes)
- oressinoma Olson, 1981 ( Euphoniaxanthogaster)
- orestera Wetmore, 1951 ( Zonotrichiacapensis)
- orestera (Oberholser, 1905) ( Leiothlypiscelata)
- oreum Deignan, 1947 ( Pellorneumruficeps)
- oriantha Oberholser, 1932 ( Zonotrichialeucophrys)
- oriens Clancey, 1957 ( Erythropygiapaena)
- orientale (Delacour & Jabouille, 1930) ( Cinclidiumfrontale)
- orientale Taczanowski, 1891 ( Glaucidiumpasserinum)
- orientalis Cabanis, 1854 ( Aquilanipalensis)
- orientalis (Temminck & Schlegel, 1844) ( Nisaetusnipalensis)
- orientalis Taczanowski, 1891 ( Pernisptilorhynchus)
- orientalis Gould, 1845 ( Mergusmerganser)
- orientalis (Mayr, 1935) (Aerodramus)
- orientalis Brehm, 1831 ( Numeniusarquata)
- orientalis Rand, 1941 ( Gallicolumbarufigula)
- orientalis Hartert, 1896 ( Macropygiaruficeps)
- orientalis (Latham, 1790) (Streptopelia)
- orientalis Peters, 1868 ( Halcyonalbiventris)
- orientalis (Linnaeus, 1766) (Eurystomus)
- orientalis Latham, 1802 (Merops)
- orientalis (Linnaeus, 1766) (Eudynamys)
- orientalis (Horsfield, 1821) (Arborophila)
- orientalis Davison, 1974 ( Lophophorussclateri)
- orientalis Horsfield, 1821 ( Gallinulachloropus)
- orientalis (Temminck & Schlegel, 1847) (Acrocephalus)
- orientalis Zarudny & Loudon, 1904 ( Ammomanesdeserti)
- orientalis Sushkin, 1925 ( Calandrellabrachydactyla)
- orientalis Tristram, 1867 ( Cettiacetti)
- orientalis Delacour, 1931 ( Neomixistenella)
- orientalis Eversmann, 1841 ( Corvuscorone)
- orientalis (Shelley, 1882) ( Emberizacabanisi)
- orientalis (Lorenz von Liburnau & Hellmayr, 1901) ( Euodicecantans)
- orientalis Mayr, 1938 ( Corydonsumatranus)
- orientalis Zimmer, 1935 ( Pseudocolaptesboissonneautii)
- orientalis Reichenow, 1889 ( Psalidoprocnepristoptera)
- orientalis (Robinson & Kloss, 1919) ( Minlacyanouroptera)
- orientalis (Jerdon, 1845) ( Turdoidesstriata)
- orientalis (Sharpe, 1883) ( Melocichlamentalis)
- orientalis (Cabanis, 1869) ( Tchagrasenegalus)
- orientalis Mayr, 1931 ( Melanocharislongicauda)
- orientalis (Meyer, 1894) (Meliphaga)
- orientalis Mayr, 1933 ( Mayrornislessoni)
- orientalis (Reichenow & Neumann, 1895) ( Myioparusplumbeus)
- orientalis (Fischer & Reichenow, 1884) ( Pogonocichlastellata)
- orientalis Hartlaub, 1880 (Anthreptes)
- orientalis Zarudny & Loudon, 1905 ( Cyanistescaeruleus)
- orientalis Chapman, 1924 ( Basileuteruscoronatus)
- orientalis (Brehm, 1855) (Phylloscopus)
- orientalis (Heuglin, 1870) (Batis)
- orientalis Gould, 1879 ( Chlamyderanuchalis)
- orientalis (Hartlaub, 1883) ( Phyllastrephusscandens)
- orientalis (Schlegel, 1871) ( Minoanais)
- orientalis Gyldenstolpe, 1941 ( Hypocnemoidesmaculicauda)
- orientalis Delacour, 1927 ( Pomatorhinusferruginosus)
- orientalis Robinson, 1918 ( Stachyristhoracica)
- orientalis Heuglin, 1870 (Vidua)
- orientalis Todd, 1916 ( Vireogundlachii)
- orientalis Chapman, 1914 ( Eubuccobourcierii)
- orientalis (Robinson, 1915) ( Megalaimaaustralis)
- orientalis Meyer, 1891 ( Geoffroyusgeoffroyi)
- orientalis (Linnaeus, 1758) (Pterocles)
- orientalis Severtzov, 1873 ( Athenenoctua)
- orientalis Delacour, 1926 ( Ketupazeylonensis)
- orienticola Todd, 1942 ( Amaziliabrevirostris)
- orienticola Oberholser, 1920 ( Electronplatyrhynchum)
- orienticola Todd, 1932 ( Penelopejacquacu)
- orientis Deignan, 1948 ( Tephrodornispondicerianus)
- origenis (Oberholser, 1906) ( Aerodramuswhiteheadi)
- Origma Gould, 1838 (Acanthizidae)
- orii Yamashina, 1932 ( Streptopeliaorientalis)
- orii (Taka-Tsukasa & Momiyama, 1931) ( Todiramphuschloris)
- orii Kuroda, 1923 ( Garrulusglandarius)
- orii (Kuroda, 1923) ( Poecilevarius)
- orii Kuroda, 1923 ( Pycnonotussinensis)
- orii Taka-Tsukasa & Yamashina, 1931 ( Aplonisopaca)
- orii (Kuroda, 1923) ( Dendrocoposkizuki)
- orina Wetmore, 1953 (Coeligena)
- orinocensis Zimmer & Phelps, 1945 ( Tachyphonuscristatus)
- orinocensis Friedmann, 1942 ( Thlypopsissordida)
- orinocensis Zimmer & Phelps, 1955 ( Turdusfumigatus)
- orinocensis Zimmer & Phelps, 1946 ( Leptopogonamaurocephalus)
- orinocensis Zimmer, 1941 ( Sublegatusarenarum)
- orinocensis Zimmer & Phelps, 1950 ( Picumnusspilogaster)
- orinoma (Oberholser, 1906) ( Anascyanoptera)
- orinomus Wetmore, 1946 ( Cnemarchuserythropygius)
- orinus Oberholser, 1905 (Acrocephalus)
- Oriolia Geoffroy Saint-Hilaire, 1838 (Vangidae)
- Oriolidae Vigors, 1825 (Passeriformes)
- oriolinus Bates, 1909 (Lobotos)
- orioloides Pucheran, 1853 (Pachycephala)
- Oriolus Linnaeus, 1766 (Oriolidae)
- oriolus (Linnaeus, 1758) (Oriolus)
- oriomo Mayr & Rand, 1936 ( Coracinapapuensis)
- orissae (Jerdon, 1845) ( Turdoidesstriata)
- orissae Ripley, 1955 ( Rhipiduraalbicollis)
- oritis (Reichenow, 1892) (Cyanomitra)
- Oriturus Bonaparte, 1850 (Emberizidae)
- orius (Oberholser, 1911) ( Picoidesvillosus)
- orix (Linnaeus, 1758) (Euplectes)
- ornata (Wagler, 1829) (Urocissa)
- ornata Shulpin, 1928 ( Emberizaaureola)
- ornata Mayr, 1932 ( Pachycephalavitiensis)
- ornata (Sclater, 1853) (Epinecrophylla)
- ornata Nelson, 1912 ( Hemithraupisflavicollis)
- ornata (Landbeck, 1865) (Poospiza)
- ornata (Sclater, 1859) (Thlypopsis)
- ornata (Sparrman, 1789) (Thraupis)
- ornata Mayr, 1940 ( Charmosynaplacentis)
- ornata (Gray, 1867) (Nothoprocta)
- ornatus (Daudin, 1800) (Spizaetus)
- ornatus (Boddaert, 1783) (Lophornis)
- ornatus Gould, 1861 ( Orthorhyncuscristatus)
- ornatus Schlegel, 1871 (Ptilinopus)
- ornatus (Mayr, 1931) ( Todiramphuschloris)
- ornatus Latham, 1802 (Merops)
- ornatus (Townsend, 1837) (Calcarius)
- ornatus Geoffroy Saint-Hilaire, 1809 (Cephalopterus)
- ornatus Zimmer, 1934 ( Xiphorhynchuselegans)
- ornatus (Gould, 1838) (Lichenostomus)
- ornatus Lesson, 1827 ( Cinnyrisjugularis)
- ornatus Temminck, 1826 ( Pardalotusstriatus)
- ornatus (Boissonneau, 1840) (Myioborus)
- ornatus (Daudin, 1800) (Lamprotornis)
- ornatus Cherrie, 1891 ( Pachyramphusalbogriseus)
- ornatus (Lafresnaye, 1853) (Myiotriccus)
- ornatus (Linnaeus, 1758) (Trichoglossus)
- Ornithion Hartlaub, 1853 (Tyrannidae)
- orosae Chapman, 1928 ( Capitoauratus)
- orostruthus (Vincent, 1933) (Arcanator)
- oroyae (Chapman, 1924) ( Haplochelidonandecola)
- orpheana (Clancey, 1954) ( Sylviasubcaerulea)
- orpheus Jardine, 1849 (Pachycephala)
- orphnum Wetmore, 1957 ( Camptostomaobsoletum)
- orphogaster Reichenow, 1899 ( Cinnyrischloropygius)
- orquillensis (Cory, 1909) ( Quiscaluslugubris)
- orrhophaeus (Cabanis & Heine, 1863) (Harpactes)
- orru Bonaparte, 1850 (Corvus)
- Ortalis Merrem, 1786 (Cracidae)
- Orthogonys Strickland, 1844 (Thraupidae)
- Orthonychidae Gray, 1840 (Passeriformes)
- Orthonyx Temminck, 1820 (Orthonychidae)
- orthonyx (Lafresnaye, 1843) (Acropternis)
- Orthopsittaca Ridgway, 1912 (Psittacidae)
- Orthorhyncus Lacepede, 1799 (Trochilidae)
- Orthotomus Horsfield, 1821 (Cisticolidae)
- ortizi Zimmer, 1952 (Incaspiza)
- ortleppi (Tristram, 1869) ( Priniaflavicans)
- ortoni Salvin, 1874 (Penelope)
- Ortygospiza Sundevall, 1850 (Estrildidae)
- Ortyxelos Vieillot, 1825 (Turnicidae)
- oryzivora (Linnaeus, 1758) (Lonchura)
- oryzivorus (Linnaeus, 1758) (Dolichonyx)
- oryzivorus (Gmelin, 1788) (Molothrus)
- Oryzoborus Cabanis, 1851 (Thraupidae)
- osai Ogawa, 1905 ( Corvusmacrorhynchos)
- osberti Gould, 1860 ( Chlorostilboncanivetii)
- osburni (Sclater, 1861) (Vireo)
- osceola Scott, 1890 ( Meleagrisgallopavo)
- oscillans (Hartert, 1897) (Rhinomyias)
- oscitans (Boddaert, 1783) (Anastomus)
- osculans (Gould, 1871) ( Coeligenaviolifer)
- osculans Swinhoe, 1871 ( Haematopusostralegus)
- osculans (Gould, 1847) (Chrysococcyx)
- osea Bonaparte, 1856 (Cinnyris)
- oseryi (Deville, 1849) (Clypicterus)
- osgoodi Cory, 1913 ( Momotussubrufescens)
- osgoodi (Bishop, 1900) ( Falcipenniscanadensis)
- osgoodi Blake, 1941 ( Aulacorhynchusderbianus)
- osgoodi Conover, 1949 (Tinamus)
- oshiroi Kuroda,Nagahisa, 1971 ( Buteojaponicus)
- osiris (Finsch, 1870) ( Cinnyrismariquensis)
- osmastoni (Baker, 1934) ( Pelargopsiscapensis)
- osmastoni (Hartert, 1908) ( Cettiapallidipes)
- ostenta Ripley, 1952 (Coracina)
- ostjakorum Sushkin & Stegmann, 1929 ( Perisoreusinfaustus)
- ostralegus Linnaeus, 1758 (Haematopus)
- ostrinus (Vieillot, 1805) (Pyrenestes)
- otero (Tschudi, 1844) ( Heliodoxaleadbeateri)
- Otididae (Otidiformes)
- Otidiformes (Aves:class)
- Otidiphaps Gould, 1870 (Columbidae)
- otiosus Bangs, 1911 ( Antrostomusrufus)
- otiosus (Richmond, 1902) ( Dicrurusparadiseus)
- Otis Linnaeus, 1758 (Otididae)
- otofuscus Moore, 1935 ( Ptilogonyscinereus)
- otomitra (Reichenow, 1904) ( Zootheragurneyi)
- ottolanderi Robinson, 1918 ( Pomatorhinusmontanus)
- ottomeyeri Stresemann, 1933 ( Lalageleucomela)
- ottomeyeri Stresemann, 1933 ( Pachycephalacitreogaster)
- ottonis Hartert, 1904 ( Ptilinopuscinctus)
- ottonis (Berlepsch, 1901) (Asthenes)
- ottonis Berlepsch, 1901 ( Pogonotriccusophthalmicus)
- ottowi Hoy, 1968 ( Geosittarufipennis)
- Otus Pennant, 1769 (Strigidae)
- otus (Linnaeus, 1758) (Asio)
- oustaleti Roselaar, 1994 ( Megapodiusfreycinet)
- oustaleti Scott, 1900 (Cinclodes)
- oustaleti (Hartert, 1909) ( Trochalopteronaffine)
- oustaleti (Bocage, 1878) (Cinnyris)
- oustaleti (Sclater, 1887) (Phylloscartes)
- oustaleti Berlepsch & Stolzmann, 1901 ( Nothoproctapentlandii)
- ovamboensis Neumann, 1920 ( Erythropygialeucophrys)
- ovamboensis Reichenow, 1904 ( Cinnyrismariquensis)
- ovampensis Gurney, 1875 (Accipiter)
- ovandensis (Brodkorb, 1939) ( Lampornisviridipallens)
- ovandensis Brodkorb, 1938 ( Catharusdryas)
- owenii Gould, 1847 (Apteryx)
- owstoni (Rothschild, 1904) ( Todiramphuschloris)
- owstoni (Rothschild, 1895) (Gallirallus)
- owstoni Ingram, 1910 ( Nucifragacaryocatactes)
- owstoni Rothschild & Hartert, 1907 ( Pyrrhulaerythaca)
- owstoni (Rothschild, 1903) ( Garrulaxcanorus)
- owstoni (Bangs, 1901) ( Ficedulanarcissina)
- owstoni Rothschild, 1910 ( Aethopygasiparaja)
- owstoni (Ijima, 1893) ( Poecilevarius)
- owstoni Hartert, 1900 ( Zosteropssemperi)
- owstoni (Ogawa, 1905) ( Dendrocoposleucotos)
- oxycerca (Spix, 1825) (Cercibis)
- Oxylabes Sharpe, 1870 (Bernieridae)
- Oxypogon Gould, 1848 (Trochilidae)
- oxyptera Meyen, 1834 ( Anasflavirostris)
- Oxyruncus Temminck, 1820 (Tityridae)
- Oxyura Bonaparte, 1828 (Anatidae)
- oxyurus (Temminck, 1823) (Treron)
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