Taxonomy index
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- Ochre-marked Parakeet (en)
- Ochre-masked Conure (en)
- Ochre-masked Parakeet (en)
- Ognorhynchus icterotis
- Olive-headed Lorikeet (en)
- Olive-shouldered Parrot (en)
- Olive-throated Conure (en)
- Olive-throated Parakeet (en)
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Orange-bellied Parrot (en)
- Orange-billed Lorikeet (en)
- Orange-billed Mountain Lory (en)
- Orange-breasted Fig Parrot (en)
- Orange-cheeked Parrot (en)
- Orange-chinned Parakeet (en)
- Orange-fronted Conure (en)
- Orange-fronted Hanging Parrot (en)
- Orange-fronted Parakeet (en)
- Orange-throated Conure (en)
- Orange-winged Amazon (en)
- Orange-winged Parrot (en)
- Orangeköpfchen (de)
- Orces parakeet (en)
- Oreopsittacus arfaki
- Oreopsittacus arfaki arfaki
- Oreopsittacus arfaki grandis
- Oreopsittacus arfaki major
- Ornate Lorikeet (en)
- Ornate Lory (en)
- Orthopsittaca manilata
- Owl Parrot (en)
taxonomy