Northern Royal Albatross
Northern Shoveler
Northern Variable Pitohui
Northern Wheatear
Northern White-faced Owl
Nuthatch Vanga
Ochraceous Bulbul
Olivaceous Flatbill
Olivaceous Piculet
Olive Bee-eater
Olive-backed Pipit
Olive-backed Sunbird
Olive-breasted Greenbul
Olive-capped Flowerpecker
Orange Weaver
Orange-backed Troupial
Orange-bellied Euphonia
Orange-bellied Flowerpecker
Orange-bellied Fruit Dove
Orange-breasted Bushshrike