- Rainforest Scops Owl
- Rattling Cisticola
- Razorbill
- Red-backed Shrike
- Red-billed Chough
- Red-billed Firefinch
- Red-billed Leiothrix
- Red-billed Oxpecker
- Red-billed Quelea
- Red-breasted Flycatcher
- Red-breasted Merganser
- Red-breasted Nuthatch
- Red-capped Lark
- Red-crested Pochard
- Red-eyed Dove
- Red-faced Cisticola
- Red-knobbed Coot
- Red-legged Partridge
- Red-necked Grebe
- Red-tailed Ant Thrush
- Red-tailed Hawk
- Red-tailed Tropicbird
- Red-throated Pipit
- Red-whiskered Bulbul
- Red-winged Blackbird
- Red-winged Lark
- Red Crossbill
- Red Fody
- Red Kite
- Red Knot
- Red Shoveler
- Redpoll
- Redwing
- Reed Cormorant
- Retz's Helmetshrike
- Reunion Bulbul
- Reunion Grey White-eye
- Reunion Harrier
- Reunion Olive White-eye
- Reunion Stonechat
- Ring-billed Gull
- Ring-necked Dove
- Ring-necked Duck
- Ring Ouzel
- Rock Bunting
- Rock Dove
- Rock Shag
- Rock Sparrow
- Rook
- Rose-ringed Parakeet
- Rosy-patched Bushshrike
- Royal Tern
- Ruddy Crake
- Ruddy Ground Dove
- Ruddy Shelduck
- Ruddy Turnstone
- Ruff
- Rufous-bellied Thrush
- Rufous-browed Peppershrike
- Rufous-collared Sparrow
- Rufous Hornero
- Rüppell's Vulture