- Racket-tailed Roller
- Racket-tailed Treepie
- Radjah Shelduck
- Raffles's Malkoha
- Rail-babbler
- Rainbow-bearded Thornbill
- Rainbow Bee-eater
- Rainbow Lorikeet
- Rainbow Starfrontlet
- Rainforest Scops Owl
- Rand's Warbler
- Ranongga White-eye
- Rattling Cisticola
- Razorbill
- Red-and-green Macaw
- Red-and-yellow Barbet
- Red-backed Fairywren
- Red-backed Flameback
- Red-backed Kingfisher
- Red-backed Mousebird
- Red-backed Shrike
- Red-backed Thrush
- Red-bearded Bee-eater
- Red-bellied Grackle
- Red-bellied Macaw
- Red-bellied Paradise Flycatcher
- Red-bellied Parrot
- Red-billed Blue Magpie
- Red-billed Buffalo Weaver
- Red-billed Chough
- Red-billed Dwarf Hornbill
- Red-billed Emerald
- Red-billed Firefinch
- Red-billed Helmetshrike
- Red-billed Leiothrix
- Red-billed Malkoha
- Red-billed Oxpecker
- Red-billed Parrot
- Red-billed Pigeon
- Red-billed Quelea
- Red-billed Scythebill
- Red-billed Spurfowl
- Red-billed Streamertail
- Red-billed Teal
- Red-billed Tropicbird
- Red-breasted Coua
- Red-breasted Flycatcher
- Red-breasted Meadowlark
- Red-breasted Merganser
- Red-breasted Nuthatch
- Red-breasted Parakeet
- Red-breasted Partridge
- Red-breasted Pygmy Parrot
- Red-breasted Swallow
- Red-breasted Toucan
- Red-browed Finch
- Red-browed Pardalote
- Red-capped Cardinal
- Red-capped Coua
- Red-capped Crombec
- Red-capped Flowerpecker
- Red-capped Forest Warbler
- Red-capped Lark
- Red-capped Manakin
- Red-capped Plover
- Red-capped Robin
- Red-capped Robin-Chat
- Red-cheeked Cordon-bleu
- Red-cheeked Parrot
- Red-cheeked Wattle-eye
- Red-chested Cuckoo
- Red-chested Flowerpecker
- Red-chested Owlet
- Red-chested Sunbird
- Red-collared Lorikeet
- Red-collared Myzomela
- Red-collared Widowbird
- Red-cowled Cardinal
- Red-cowled Widowbird
- Red-crested Cardinal
- Red-crested Cotinga
- Red-crested Korhaan
- Red-crested Pochard
- Red-crested Turaco
- Red-crowned Ant Tanager
- Red-crowned Barbet
- Red-crowned Parakeet
- Red-crowned Woodpecker
- Red-eared Fruit Dove
- Red-eyed Dove
- Red-eyed Puffback
- Red-faced Cisticola
- Red-faced Crimsonwing
- Red-faced Crombec
- Red-faced Malkoha
- Red-faced Mousebird
- Red-faced Spinetail
- Red-faced Warbler
- Red-fan Parrot
- Red-flanked Bluetail
- Red-footed Booby
- Red-footed Falcon
- Red-fronted Antpecker
- Red-fronted Barbet
- Red-fronted Coua
- Red-fronted Parrot
- Red-fronted Prinia
- Red-fronted Serin
- Red-gartered Coot
- Red-headed Barbet
- Red-headed Bullfinch
- Red-headed Finch
- Red-headed Flameback
- Red-headed Lovebird
- Red-headed Malimbe
- Red-headed Myzomela
- Red-headed Tanager
- Red-headed Trogon
- Red-headed Weaver
- Red-keeled Flowerpecker
- Red-kneed Dotterel
- Red-knobbed Coot
- Red-knobbed Imperial Pigeon
- Red-legged Cormorant
- Red-legged Honeycreeper
- Red-legged Partridge
- Red-legged Seriema
- Red-lored Amazon
- Red-masked Parakeet
- Red-naped Fruit Dove
- Red-naped Ibis
- Red-naped Sapsucker
- Red-naped Trogon
- Red-necked Avocet
- Red-necked Buzzard
- Red-necked Falcon
- Red-necked Grebe
- Red-necked Phalarope
- Red-necked Spurfowl
- Red-necked Stint
- Red-necked Tanager
- Red-necked Woodpecker
- Red-pate Cisticola
- Red-ruffed Fruitcrow
- Red-rumped Cacique
- Red-rumped Parrot
- Red-rumped Tinkerbird
- Red-rumped Woodpecker
- Red-shouldered Cuckooshrike
- Red-shouldered Macaw
- Red-shouldered Vanga
- Red-tailed Ant Thrush
- Red-tailed Black Cockatoo
- Red-tailed Bristlebill
- Red-tailed Comet
- Red-tailed Greenbul
- Red-tailed Hawk
- Red-tailed Minla
- Red-tailed Shrike
- Red-tailed Tropicbird
- Red-tailed Vanga
- Red-thighed Sparrowhawk
- Red-throated Ant Tanager
- Red-throated Barbet
- Red-throated Bee-eater
- Red-throated Caracara
- Red-throated Cliff Swallow
- Red-throated Loon
- Red-throated Piping Guan
- Red-throated Pipit
- Red-throated Rock Martin
- Red-throated Sunbird
- Red-throated Thrush
- Red-throated Tit
- Red-throated Twinspot
- Red-throated Wryneck
- Red-vented Bulbul
- Red-vented Cockatoo
- Red-vented Malimbe
- Red-vested Myzomela
- Red-wattled Lapwing
- Red-whiskered Bulbul
- Red-winged Blackbird
- Red-winged Francolin
- Red-winged Lark
- Red-winged Laughingthrush
- Red-winged Parrot
- Red-winged Prinia
- Red-winged Starling
- Red-winged Tinamou
- Red Bird-of-paradise
- Red Collared Dove
- Red Crossbill
- Red Fody
- Red Junglefowl
- Red Kite
- Red Knot
- Red Lark
- Red Owl
- Red Phalarope
- Red Pileated Finch
- Red Spurfowl
- Red Warbler
- Red Wattlebird
- Reddish Egret
- Reddish Scops Owl
- Redhead
- Redpoll
- Redthroat
- Redwing
- Reed Cormorant
- Regent Parrot
- Regent Whistler
- Reichard's Seedeater
- Reichenbach's Sunbird
- Reichenow's Seedeater
- Rennell Fantail
- Rennell Gerygone
- Rennell Shrikebill
- Rennell Starling
- Rennell Whistler
- Rennell White-eye
- Resplendent Quetzal
- Restless Flycatcher
- Retz's Helmetshrike
- Rhinoceros Hornbill
- Richard's Pipit
- Ridgetop Swiftlet
- Rifleman
- Ring-billed Gull
- Ring-necked Dove
- Ring-necked Duck
- Ring-tailed Pigeon
- Ring Ouzel
- Ringed Kingfisher
- Ringed Teal
- Ringed Warbling Finch
- Ringed Woodpecker
- River Lapwing
- River Tern
- Riverside Wren
- Rivoli's Hummingbird
- Roadside Hawk
- Roberts's Warbler
- Rock-loving Cisticola
- Rock Bunting
- Rock Dove
- Rock Kestrel
- Rock Pratincole
- Rock Ptarmigan
- Rock Shag
- Rock Sparrow
- Rock Wren
- Rockrunner
- Romblon Boobook
- Rook
- Rose-bellied Bunting
- Rose-breasted Grosbeak
- Rose-crowned Fruit Dove
- Rose-faced Parrot
- Rose-ringed Parakeet
- Rose-throated Becard
- Rose Robin
- Roseate Spoonbill
- Roseate Tern
- Ross's Turaco
- Rosy-billed Pochard
- Rosy-faced Lovebird
- Rosy-patched Bushshrike
- Rosy-throated Longclaw
- Rosy Bee-eater
- Rosy Pipit
- Rosy Starling
- Rote Boobook
- Rote Leaf Warbler
- Rote Myzomela
- Rouget's Rail
- Rough-crested Malkoha
- Rough-legged Buzzard
- Round-tailed Manakin
- Roviana Rail
- Royal Spoonbill
- Royal Tern
- Rubeho Warbler
- Ruby-cheeked Sunbird
- Ruby-crowned Kinglet
- Ruby-crowned Tanager
- Ruby-throated Bulbul
- Ruby-throated Hummingbird
- Ruby-topaz Hummingbird
- Rudd's Apalis
- Ruddy-breasted Seedeater
- Ruddy-capped Nightingale-Thrush
- Ruddy-tailed Flycatcher
- Ruddy Ground Dove
- Ruddy Kingfisher
- Ruddy Pigeon
- Ruddy Quail-Dove
- Ruddy Shelduck
- Ruddy Turnstone
- Rufescent Flycatcher
- Rufescent Prinia
- Rufescent Tiger Heron
- Ruff
- Rufous-and-white Wren
- Rufous-backed Antvireo
- Rufous-backed Dwarf Kingfisher
- Rufous-backed Inca Finch
- Rufous-backed Stipplethroat
- Rufous-backed Thrush
- Rufous-backed Wren
- Rufous-bellied Eagle
- Rufous-bellied Heron
- Rufous-bellied Kookaburra
- Rufous-bellied Niltava
- Rufous-bellied Seedsnipe
- Rufous-bellied Swallow
- Rufous-bellied Thrush
- Rufous-bellied Triller
- Rufous-bellied Woodpecker
- Rufous-breasted Accentor
- Rufous-breasted Chat-Tyrant
- Rufous-breasted Flycatcher
- Rufous-breasted Hermit
- Rufous-breasted Leaftosser
- Rufous-breasted Spinetail
- Rufous-browed Peppershrike
- Rufous-capped Antshrike
- Rufous-capped Babbler
- Rufous-capped Motmot
- Rufous-capped Nunlet
- Rufous-capped Spinetail
- Rufous-capped Warbler
- Rufous-cheeked Nightjar
- Rufous-chested Flycatcher
- Rufous-collared Kingfisher
- Rufous-collared Sparrow
- Rufous-collared Thrush
- Rufous-crested Coquette
- Rufous-crested Tanager
- Rufous-crowned Babbler
- Rufous-crowned Bee-eater
- Rufous-crowned Eremomela
- Rufous-crowned Greenlet
- Rufous-crowned Sparrow
- Rufous-crowned Tody-Flycatcher
- Rufous-eared Brushfinch
- Rufous-eared Warbler
- Rufous-faced Warbler
- Rufous-fronted Babbler
- Rufous-fronted Bushtit
- Rufous-fronted Thornbird
- Rufous-gorgeted Flycatcher
- Rufous-headed Ground Roller
- Rufous-headed Pygmy Tyrant
- Rufous-lored Kingfisher
- Rufous-margined Antwren
- Rufous-naped Bellbird
- Rufous-naped Ground Tyrant
- Rufous-naped Lark
- Rufous-necked Hornbill
- Rufous-necked Laughingthrush
- Rufous-necked Snowfinch
- Rufous-rumped Antwren
- Rufous-sided Broadbill
- Rufous-sided Crake
- Rufous-sided Honeyeater
- Rufous-tailed Antbird
- Rufous-tailed Flatbill
- Rufous-tailed Flycatcher
- Rufous-tailed Foliage-gleaner
- Rufous-tailed Hummingbird
- Rufous-tailed Jacamar
- Rufous-tailed Lark
- Rufous-tailed Palm Thrush
- Rufous-tailed Scrub Robin
- Rufous-tailed Stipplethroat
- Rufous-tailed Tailorbird
- Rufous-tailed Tyrant
- Rufous-tailed Weaver
- Rufous-throated Bronze Cuckoo
- Rufous-throated Honeyeater
- Rufous-throated Solitaire
- Rufous-throated Tanager
- Rufous-throated Wren-Babbler
- Rufous-vented Chachalaca
- Rufous-vented Paradise Flycatcher
- Rufous-vented Tit
- Rufous-vented Whitetip
- Rufous-vented Yuhina
- Rufous-webbed Bush Tyrant
- Rufous-winged Cisticola
- Rufous-winged Fulvetta
- Rufous-winged Illadopsis
- Rufous-winged Philentoma
- Rufous-winged Sunbird
- Rufous-winged Tanager
- Rufous Babbler
- Rufous Casiornis
- Rufous Chatterer
- Rufous Cisticola
- Rufous Crab Hawk
- Rufous Fieldwren
- Rufous Fishing Owl
- Rufous Gnateater
- Rufous Hornbill
- Rufous Hornero
- Rufous Hummingbird
- Rufous Motmot
- Rufous Owl
- Rufous Paradise Flycatcher
- Rufous Piculet
- Rufous Shrikethrush
- Rufous Sibia
- Rufous Songlark
- Rufous Spinetail
- Rufous Treepie
- Rufous Vanga
- Rufous Whistler
- Rufous Woodpecker
- Running Coua
- Rüppell's Black Chat
- Rüppell's Korhaan
- Rüppell's Parrot
- Rüppell's Robin-Chat
- Rüppell's Starling
- Rüppell's Vulture
- Rüppell's Weaver
- Ruspoli's Turaco
- Russet-backed Oropendola
- Russet-capped Tesia
- Russet-crowned Motmot
- Russet-crowned Warbler
- Russet-naped Wood Rail
- Russet-naped Wren
- Russet-tailed Thrush
- Russet-throated Puffbird
- Russet Antshrike
- Russet Bush Warbler
- Russet Nightingale-Thrush
- Russet Sparrow
- Rust-and-yellow Tanager
- Rustic Bunting
- Rusty-backed Antwren
- Rusty-barred Owl
- Rusty-bellied Brushfinch
- Rusty-breasted Wheatear
- Rusty-breasted Whistler (fulvotincta)
- Rusty-capped Fulvetta
- Rusty-collared Seedeater
- Rusty-crowned Babbler
- Rusty-crowned Tit-Spinetail
- Rusty-fronted Barwing
- Rusty-fronted Canastero
- Rusty-headed Spinetail
- Rusty-margined Flycatcher
- Rusty-margined Guan
- Rusty-tailed Flycatcher
- Rusty-tinged Antpitta
- Rusty Flowerpiercer
- Ruvu Weaver