- Razorbill
- Red-backed Shrike
- Red-bearded Bee-eater
- Red-billed Chough
- Red-billed Firefinch
- Red-billed Oxpecker
- Red-billed Pigeon
- Red-billed Quelea
- Red-billed Teal
- Red-billed Tropicbird
- Red-breasted Merganser
- Red-breasted Nuthatch
- Red-capped Cardinal
- Red-cheeked Cordon-bleu
- Red-cowled Widowbird
- Red-crested Cardinal
- Red-crested Korhaan
- Red-crested Pochard
- Red-crowned Woodpecker
- Red-eyed Dove
- Red-faced Crombec
- Red-footed Booby
- Red-footed Falcon
- Red-fronted Barbet
- Red-fronted Coot
- Red-gartered Coot
- Red-headed Bluebill
- Red-headed Vulture
- Red-headed Weaver
- Red-knobbed Coot
- Red-legged Cormorant
- Red-legged Honeycreeper
- Red-legged Thrush
- Red-lored Amazon
- Red-necked Grebe
- Red-necked Spurfowl
- Red-tailed Hawk
- Red-tailed Wheatear
- Red-throated Ant Tanager
- Red-throated Bee-eater
- Red-throated Loon
- Red-throated Wryneck
- Red-vented Bulbul
- Red-wattled Lapwing
- Red-winged Blackbird
- Red-winged Starling
- Red Collared Dove
- Red Crossbill
- Red Fody
- Red Knot
- Red Phalarope
- Red Shoveler
- Reddish Egret
- Redpoll
- Redwing
- Reed Cormorant
- Resplendent Quetzal
- Richard's Pipit
- Rifleman
- Ring-billed Gull
- Ring-necked Dove
- Ring Ouzel
- Ringed Kingfisher
- Rivoli's Hummingbird
- Roadside Hawk
- Rock Bunting
- Rock Ptarmigan
- Rock Shag
- Rock Sparrow
- Rook
- Rose-breasted Grosbeak
- Rose-ringed Parakeet
- Rose-throated Becard
- Rosy Starling
- Rouget's Rail
- Royal Tern
- Ruddy-breasted Crake
- Ruddy-capped Nightingale-Thrush
- Ruddy Duck
- Ruddy Ground Dove
- Ruddy Shelduck
- Ruddy Treerunner
- Ruddy Turnstone
- Rufescent Tiger Heron
- Ruff
- Ruffed Grouse
- Rufous-backed Wren
- Rufous-bellied Heron
- Rufous-bellied Seedsnipe
- Rufous-bellied Thrush
- Rufous-breasted Sparrowhawk
- Rufous-breasted Wren
- Rufous-collared Sparrow
- Rufous-tailed Hummingbird
- Rufous-tailed Jacamar
- Rufous-throated Solitaire
- Rufous-vented Yuhina
- Rufous Chatterer
- Rufous Hornero
- Rufous Hummingbird
- Rufous Treepie
- Rüppell's Robin-Chat
- Rüppell's Starling
- Rüppell's Vulture
- Rüppell's Weaver
- Russet-backed Oropendola
- Rusty-breasted Wheatear
- Rusty-margined Flycatcher