- Ratchet-tailed Treepie
- Rathlin Island
- Rathlin Island Northern Ireland
- Ratites
- Rattling Cisticola
- Rattray Head
- Rauenia
- Rauenia bonariensis
- Rauenia bonariensis
- Raven
- Raven's Whistler
- Ravens
- Razo Lark
- Razo Skylark
- Razor-billed Curassow
- Razorbill
- Rdum Tal-Madonna
- Rdum Tal-Madonna Malta
- Recurve-billed Bushbird
- Recurvirostra
- Recurvirostra americana
- Recurvirostra andina
- Recurvirostra avosetta
- Recurvirostra novaehollandiae
- Recurvirostridae
- Red-Bellied Woodpecker
- Red-Eyed Vireo
- Red-Lored Amazon
- Red-Shouldered Hawk
- Red-Tailed Hawk
- Red-Winged Blackbird
- Red-and-Black Grosbeak
- Red-and-Green Macaw
- Red-and-Yellow Barbet
- Red-and-black Grosbeak
- Red-and-black Thrush
- Red-and-blue Lory
- Red-and-green Macaw
- Red-and-white Antpitta
- Red-and-white Crake
- Red-and-white Spinetail
- Red-and-yellow Barbet
- Red-backed Broadbill
- Red-backed Buttonquail
- Red-backed Fairywren
- Red-backed Flameback
- Red-backed Hawk
- Red-backed Honeyeater
- Red-backed Kingfisher
- Red-backed Mannikin
- Red-backed Mousebird
- Red-backed Scrub-Robin
- Red-backed Scrub Robin
- Red-backed Shrike
- Red-backed Sierra-Finch
- Red-backed Sierra Finch
- Red-backed Thrush
- Red-banded Flowerpecker
- Red-banded Fruiteater
- Red-bearded Bee-eater
- Red-bellied Bush-Tanager
- Red-bellied Bush-tanager
- Red-bellied Fruit-Dove
- Red-bellied Fruit Dove
- Red-bellied Grackle
- Red-bellied Macaw
- Red-bellied Malimbe
- Red-bellied Myzomela
- Red-bellied Nuthatch
- Red-bellied Paradise-Flycatcher
- Red-bellied Paradise Flycatcher
- Red-bellied Parrot
- Red-bellied Pitta
- Red-bellied Robin-whistler
- Red-bellied Shrike-thrush
- Red-bellied Shrike Thrush
- Red-bellied Thrush
- Red-bellied Triller
- Red-bellied Woodpecker
- Red-bibbed Honeyeater
- Red-billed Azurecrown
- Red-billed Babbler
- Red-billed Blue Magpie
- Red-billed Brush Turkey
- Red-billed Brushturkey
- Red-billed Buffalo-Weaver
- Red-billed Buffalo Weaver
- Red-billed Chough
- Red-billed Curassow
- Red-billed Duck
- Red-billed Dwarf-hornbill
- Red-billed Dwarf Hornbill
- Red-billed Emerald
- Red-billed Firefinch
- Red-billed Francolin
- Red-billed Grey Magpie
- Red-billed Ground-Cuckoo
- Red-billed Ground Cuckoo
- Red-billed Gull
- Red-billed Hanging Parrot
- Red-billed Helmet-shrike
- Red-billed Helmetshrike
- Red-billed Hill-Partridge
- Red-billed Hill Partridge
- Red-billed Hornbill
- Red-billed Leiothrix
- Red-billed Magpie
- Red-billed Malkoha
- Red-billed Mesia
- Red-billed Oxpecker
- Red-billed Parrot
- Red-billed Partridge
- Red-billed Pied Tanager
- Red-billed Pigeon
- Red-billed Pytilia
- Red-billed Quail-Finch
- Red-billed Quailfinch
- Red-billed Quelea
- Red-billed Scimitar-Babbler
- Red-billed Scimitar Babbler
- Red-billed Scythebill
- Red-billed Spurfowl
- Red-billed Starling
- Red-billed Streamertail
- Red-billed Talegalla
- Red-billed Tanager
- Red-billed Teal
- Red-billed Thrush
- Red-billed Toucan
- Red-billed Trogon
- Red-billed Tropicbird
- Red-billed Tyrannulet
- Red-billed Woodcreeper
- Red-billed brush-turkey
- Red-breasted Babbler
- Red-breasted Blackbird
- Red-breasted Chat
- Red-breasted Coua
- Red-breasted Dotterel
- Red-breasted Flycatcher
- Red-breasted Goose
- Red-breasted Meadowlark
- Red-breasted Merganser
- Red-breasted Nuthatch
- Red-breasted Paradise-Kingfisher
- Red-breasted Paradise Kingfisher
- Red-breasted Parakeet
- Red-breasted Partridge
- Red-breasted Pitta
- Red-breasted Plover
- Red-breasted Pygmy-Parrot
- Red-breasted Pygmy Parrot
- Red-breasted Sapsucker
- Red-breasted Swallow
- Red-breasted Toucan
- Red-breasted Wheatear
- Red-breasted Wryneck
- Red-browed Amazon
- Red-browed Finch
- Red-browed Firetail
- Red-browed Pardalote
- Red-browed Parrot
- Red-browed Rosefinch
- Red-browed Starling
- Red-browed Treecreeper
- Red-browed Waxbill
- Red-capped Babbler
- Red-capped Cardinal
- Red-capped Coua
- Red-capped Crombec
- Red-capped Flowerpecker
- Red-capped Forest Warbler
- Red-capped Lark
- Red-capped Madagascar Coucal
- Red-capped Manakin
- Red-capped Myzomela
- Red-capped Parrot
- Red-capped Parrot-finch
- Red-capped Parrotfinch
- Red-capped Plover
- Red-capped Robin
- Red-capped Robin-Chat
- Red-capped Robin Chat
- Red-capped Wren-Spinetail
- Red-capped Wren Spinetail
- Red-cheeked Cordon-bleu
- Red-cheeked Cordonbleu
- Red-cheeked Myna
- Red-cheeked Mynah
- Red-cheeked Parrot
- Red-cheeked Starling
- Red-cheeked Wattle-eye
- Red-chested Buttonquail
- Red-chested Cuckoo
- Red-chested Flowerpecker
- Red-chested Flufftail
- Red-chested Goshawk
- Red-chested Owlet
- Red-chested Sunbird
- Red-chested Swallow
- Red-chinned Lorikeet
- Red-cockaded Woodpecker
- Red-collared Babbler
- Red-collared Blackcap
- Red-collared Lorikeet
- Red-collared Mountain-Babbler
- Red-collared Mountain-babbler
- Red-collared Mountain Babbler
- Red-collared Myzomela
- Red-collared Parrotfinch
- Red-collared Widow
- Red-collared Widowbird
- Red-collared Woodpecker
- Red-cowled Cardinal
- Red-cowled Widowbird
- Red-crested Bustard
- Red-crested Cardinal
- Red-crested Cotinga
- Red-crested Finch
- Red-crested Korhaan
- Red-crested Malkoha
- Red-crested Pochard
- Red-crested Turaco
- Red-crowned Amazon
- Red-crowned Ant-Tanager
- Red-crowned Ant Tanager
- Red-crowned Barbet
- Red-crowned Crane
- Red-crowned Jay
- Red-crowned Malimbe
- Red-crowned Parakeet
- Red-crowned Parrot
- Red-crowned Woodpecker
- Red-eared Firetail
- Red-eared Fruit-Dove
- Red-eared Fruit Dove
- Red-eared Parakeet
- Red-eared Parrot-Finch
- Red-eared Parrotfinch
- Red-eyebrowed Treecreeper
- Red-eyed Brown Bulbul
- Red-eyed Bulbul
- Red-eyed Crake
- Red-eyed Dove
- Red-eyed Fulvetta
- Red-eyed Puffback
- Red-eyed Thornbird
- Red-eyed Turtle-Dove
- Red-eyed Vireo
- Red-faced Apalis
- Red-faced Barbet
- Red-faced Cisticola
- Red-faced Cormorant
- Red-faced Crimson-wing
- Red-faced Crimsonwing
- Red-faced Crombec
- Red-faced Guan
- Red-faced Liocichla
- Red-faced Malkoha
- Red-faced Mousebird
- Red-faced Parrot
- Red-faced Pytilia
- Red-faced Shag
- Red-faced Spinetail
- Red-faced Sylvetta
- Red-faced Warbler
- Red-faced Woodland-Warbler
- Red-faced Woodland Warbler
- Red-fan Parrot
- Red-flanked Bluetail
- Red-flanked Lorikeet
- Red-footed Booby
- Red-footed Falcon
- Red-footed Plumeleteer
- Red-footed Tinamou
- Red-fronted Antpecker
- Red-fronted Apalis
- Red-fronted Babbler
- Red-fronted Barbet
- Red-fronted Coot
- Red-fronted Coua
- Red-fronted Laughingthrush
- Red-fronted Lorikeet
- Red-fronted Macaw
- Red-fronted Madagascar Coucal
- Red-fronted Parakeet
- Red-fronted Parrot
- Red-fronted Parrotlet
- Red-fronted Prinia
- Red-fronted Rosefinch
- Red-fronted Serin
- Red-fronted Tinkerbird
- Red-fronted Warbler
- Red-gartered Coot
- Red-headed Babbler
- Red-headed Barbet
- Red-headed Bluebill
- Red-headed Bullfinch
- Red-headed Bunting
- Red-headed Cisticola
- Red-headed Crowtit
- Red-headed Finch
- Red-headed Flameback
- Red-headed Fody
- Red-headed Honeyeater
- Red-headed Laughingthrush
- Red-headed Lovebird
- Red-headed Malimbe
- Red-headed Manakin
- Red-headed Myzomela
- Red-headed Parrot-Finch
- Red-headed Parrotbill
- Red-headed Parrotfinch
- Red-headed Picathartes
- Red-headed Quelea
- Red-headed Rockfowl
- Red-headed Scarlet Pitta
- Red-headed Tanager
- Red-headed Tit
- Red-headed Trogon
- Red-headed Vulture
- Red-headed Weaver
- Red-headed Woodpecker
- Red-headed long-tailed Tit
- Red-hooded Tanager
- Red-keeled Flowerpecker
- Red-kneed Dotterel
- Red-knobbed Coot
- Red-knobbed Hornbill
- Red-knobbed Imperial-Pigeon
- Red-knobbed Imperial Pigeon
- Red-knobbed Pigeon
- Red-legged Brushturkey
- Red-legged Cormorant
- Red-legged Crake
- Red-legged Honeycreeper
- Red-legged Kittiwake
- Red-legged Partridge
- Red-legged Seriema
- Red-legged Thrush
- Red-legged Tinamou
- Red-lored Amazon
- Red-lored Parrot
- Red-lored Thickhead
- Red-lored Whistler