Showing below up to 50 results in range #19,351 to #19,400.
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- Oreophylax moreirae → Itatiaia Spinetail
- Oreopsar → Category:Oreopsar
- Oreopsar bolivianus → Bolivian Blackbird
- Oreopsittacus → Category:Oreopsittacus
- Oreopsittacus arfaki → Plum-faced Lorikeet
- Oreopyra calolaema → Purple-throated Mountain-gem
- Oreornis → Category:Oreornis
- Oreornis chrysogenys → Orange-cheeked Honeyeater
- Oreortyx → Category:Oreortyx
- Oreortyx pictus → Mountain Quail
- Oreoscoptes → Category:Oreoscoptes
- Oreoscoptes montanus → Sage Thrasher
- Oreoscopus → Category:Oreoscopus
- Oreoscopus gutturalis → Fernwren
- Oreostruthus → Category:Oreostruthus
- Oreostruthus fuliginosus → Mountain Firetail
- Oreothlypis → Category:Oreothlypis
- Oreothlypis celata → Orange-crowned Warbler
- Oreothlypis celata orestera → Orange-crowned Warbler
- Oreothlypis crissalis → Colima Warbler
- Oreothlypis gutturalis → Flame-throated Warbler
- Oreothlypis luciae → Lucy's Warbler
- Oreothlypis peregrina → Tennessee Warbler
- Oreothlypis ruficapilla → Nashville Warbler
- Oreothlypis superciliosa → Crescent-chested Warbler
- Oreothlypis virginiae → Virginia's Warbler
- Oreothraupis → Category:Oreothraupis
- Oreothraupis arremonops → Tanager Finch
- Oreotrochilus → Category:Oreotrochilus
- Oreotrochilus adela → Wedge-tailed Hillstar
- Oreotrochilus chimborazo → Ecuadorian Hillstar
- Oreotrochilus cyanolaemus → Blue-throated Hillstar
- Oreotrochilus estella → Andean Hillstar
- Oreotrochilus leucopleurus → White-sided Hillstar
- Oreotrochilus melanogaster → Black-breasted Hillstar
- Oreotrochilus stolzmanni → Green-headed Hillstar
- Oressochen → Category:Oressochen
- Oressochen jubatus → Orinoco Goose
- Oressochen melanopterus → Andean Goose
- Orgambideska → Organbideska
- Orgambideska France → Organbideska
- Oriental Bay-Owl → Oriental Bay Owl
- Oriental Bullfinch → Eurasian Bullfinch
- Oriental Crow → Carrion Crow
- Oriental Dollarbird → Dollarbird
- Oriental Eagle-Owl → Barred Eagle-Owl
- Oriental Eagle Owl → Barred Eagle-Owl
- Oriental Great Reed-Warbler → Oriental Reed Warbler
- Oriental Great Reed Warbler → Oriental Reed Warbler
- Oriental Honey-Buzzard → Oriental Honey Buzzard


