- Rattling Cisticola
- Razorbill
- Red-and-yellow Barbet
- Red-backed Shrike
- Red-bellied Parrot
- Red-billed Buffalo Weaver
- Red-billed Chough
- Red-billed Firefinch
- Red-billed Oxpecker
- Red-billed Parrot
- Red-billed Pigeon
- Red-billed Quelea
- Red-billed Spurfowl
- Red-billed Tropicbird
- Red-breasted Merganser
- Red-breasted Swallow
- Red-capped Cardinal
- Red-capped Lark
- Red-cheeked Cordon-bleu
- Red-chested Cuckoo
- Red-chested Sunbird
- Red-collared Widowbird
- Red-crested Cardinal
- Red-crested Cotinga
- Red-crested Korhaan
- Red-crested Pochard
- Red-crowned Woodpecker
- Red-eyed Dove
- Red-faced Cisticola
- Red-faced Mousebird
- Red-faced Spinetail
- Red-footed Falcon
- Red-headed Barbet
- Red-headed Finch
- Red-headed Lovebird
- Red-headed Weaver
- Red-knobbed Coot
- Red-legged Cormorant
- Red-legged Honeycreeper
- Red-legged Partridge
- Red-legged Seriema
- Red-lored Amazon
- Red-masked Parakeet
- Red-necked Falcon
- Red-necked Grebe
- Red-necked Phalarope
- Red-necked Spurfowl
- Red-rumped Cacique
- Red-tailed Amazon
- Red-tailed Shrike
- Red-throated Ant Tanager
- Red-throated Bee-eater
- Red-throated Loon
- Red-throated Piping Guan
- Red-throated Pipit
- Red-vented Bulbul
- Red-wattled Lapwing
- Red-winged Blackbird
- Red-winged Grey Warbler
- Red-winged Starling
- Red-winged Tinamou
- Red Crossbill
- Red Fody
- Red Kite
- Red Knot
- Red Pileated Finch
- Red Shoveler
- Red Tanager
- Redpoll
- Redwing
- Reed Cormorant
- Resplendent Quetzal
- Richard's Pipit
- Ring-billed Gull
- Ring-necked Dove
- Ring Ouzel
- Ringed Kingfisher
- Rivoli's Hummingbird
- Roadside Hawk
- Rock Bunting
- Rock Dove
- Rock Kestrel
- Rock Pratincole
- Rock Ptarmigan
- Rock Sparrow
- Rook
- Rose-ringed Parakeet
- Rose-throated Becard
- Roseate Spoonbill
- Ross's Turaco
- Rosy-billed Pochard
- Rosy-faced Lovebird
- Rough-legged Buzzard
- Royal Tern
- Ruddy Duck
- Ruddy Ground Dove
- Ruddy Pigeon
- Ruddy Shelduck
- Ruddy Treerunner
- Ruddy Turnstone
- Rufescent Tiger Heron
- Ruff
- Rufous-backed Wren
- Rufous-bellied Heron
- Rufous-bellied Thrush
- Rufous-breasted Chat-Tyrant
- Rufous-breasted Flycatcher
- Rufous-collared Sparrow
- Rufous-naped Ground Tyrant
- Rufous-naped Lark
- Rufous-tailed Hummingbird
- Rufous-tailed Jacamar
- Rufous-tailed Plantcutter
- Rufous-winged Woodpecker
- Rufous Hornero
- Rufous Motmot
- Rüppell's Korhaan
- Rüppell's Starling
- Rüppell's Vulture
- Russet-backed Oropendola
- Russet-crowned Warbler
- Rusty-fronted Canastero
- Rusty-margined Flycatcher
- Rusty Flowerpiercer