- Radde's Warbler
- Radjah Shelduck
- Rattling Cisticola
- Razorbill
- Red-backed Shrike
- Red-billed Buffalo Weaver
- Red-billed Chough
- Red-billed Firefinch
- Red-billed Oxpecker
- Red-billed Quelea
- Red-breasted Flycatcher
- Red-breasted Goose
- Red-breasted Merganser
- Red-breasted Nuthatch
- Red-capped Lark
- Red-capped Robin-Chat
- Red-crested Cardinal
- Red-crested Pochard
- Red-crowned Ant Tanager
- Red-eyed Dove
- Red-eyed Vireo
- Red-faced Guan
- Red-faced Mousebird
- Red-flanked Bluetail
- Red-footed Falcon
- Red-fronted Coot
- Red-gartered Coot
- Red-headed Finch
- Red-knobbed Coot
- Red-legged Partridge
- Red-naped Ibis
- Red-necked Grebe
- Red-necked Phalarope
- Red-rumped Cacique
- Red-tailed Comet
- Red-tailed Hawk
- Red-throated Loon
- Red-throated Pipit
- Red-throated Wryneck
- Red-vented Bulbul
- Red-wattled Lapwing
- Red-winged Blackbird
- Red-winged Starling
- Red Collared Dove
- Red Crossbill
- Red Kite
- Red Knot
- Red Phalarope
- Red Pileated Finch
- Red Shoveler
- Redhead
- Redpoll
- Redpoll (cabaret)
- Redpoll (hornemanni)
- Redwing
- Reed Cormorant
- Reeves's Pheasant
- Retz's Helmetshrike
- Richard's Pipit
- Ring-billed Gull
- Ring-necked Dove
- Ring-necked Duck
- Ring Ouzel
- Ringed Kingfisher
- Ringed Teal
- Ringed Warbling Finch
- River Lapwing
- River Tern
- River Warbler
- Roadside Hawk
- Rock Bunting
- Rock Dove
- Rock Sparrow
- Rook
- Rose-breasted Grosbeak
- Rose-ringed Parakeet
- Roseate Spoonbill
- Roseate Tern
- Rosy-billed Pochard
- Rosy Starling
- Rough-legged Buzzard
- Ruby-crowned Kinglet
- Ruby-throated Hummingbird
- Ruddy Duck
- Ruddy Ground Dove
- Ruddy Shelduck
- Ruddy Turnstone
- Rufescent Tiger Heron
- Ruff
- Ruffed Grouse
- Rufous-banded Miner
- Rufous-bellied Mountain Tanager
- Rufous-bellied Thrush
- Rufous-browed Peppershrike
- Rufous-collared Sparrow
- Rufous-fronted Prinia
- Rufous-naped Ground Tyrant
- Rufous-tailed Scrub Robin
- Rufous-throated Dipper
- Rufous Hornero
- Rufous Treepie
- Rüppell's Warbler
- Rustic Bunting
- Rusty-collared Seedeater
- Rusty Flowerpiercer