- Radjah Shelduck
- Razor-billed Curassow
- Razorbill
- Red-and-green Macaw
- Red-and-white Crake
- Red-and-yellow Barbet
- Red-backed Shrike
- Red-billed Blue Magpie
- Red-billed Chough
- Red-billed Curassow
- Red-billed Leiothrix
- Red-breasted Goose
- Red-breasted Merganser
- Red-breasted Parakeet
- Red-collared Lorikeet
- Red-cowled Cardinal
- Red-crested Pochard
- Red-crested Turaco
- Red-crowned Amazon
- Red-crowned Crane
- Red-fan Parrot
- Red-flanked Lorikeet
- Red-fronted Macaw
- Red-fronted Parrot
- Red-legged Honeycreeper
- Red-legged Partridge
- Red-legged Seriema
- Red-lored Amazon
- Red-necked Grebe
- Red-necked Phalarope
- Red-rumped Parrot
- Red-tailed Black Cockatoo
- Red-tailed Laughingthrush
- Red-throated Loon
- Red-throated Pipit
- Red-vented Cockatoo
- Red-wattled Lapwing
- Red-whiskered Bulbul
- Red Crossbill
- Red Fody
- Red Grouse
- Red Junglefowl
- Red Kite
- Red Knot
- Red Shoveler
- Redpoll
- Redwing
- Rhinoceros Hornbill
- Ring-necked Duck
- Ring Ouzel
- Ringed Teal
- Rock Dove
- Rock Ptarmigan
- Rock Sparrow
- Rook
- Rose-ringed Parakeet
- Roseate Spoonbill
- Rosy-billed Pochard
- Rosy Starling
- Rough-legged Buzzard
- Ruddy Duck
- Ruddy Quail-Dove
- Ruddy Shelduck
- Ruddy Turnstone
- Ruff
- Rüppell's Vulture