- Racket-tailed Treepie
- Radde's Warbler
- Raffles's Malkoha
- Raggiana Bird-of-paradise
- Rainbow Starfrontlet
- Ratchet-tailed Treepie
- Razorbill
- Red-banded Flowerpecker
- Red-bearded Bee-eater
- Red-bellied Woodpecker
- Red-billed Blue Magpie
- Red-billed Chough
- Red-billed Leiothrix
- Red-billed Malkoha
- Red-billed Parrot
- Red-billed Pied Tanager
- Red-billed Pigeon
- Red-billed Tropicbird
- Red-breasted Blackbird
- Red-breasted Merganser
- Red-breasted Nuthatch
- Red-breasted Parakeet
- Red-breasted Sapsucker
- Red-capped Cardinal
- Red-capped Flowerpecker
- Red-capped Manakin
- Red-cheeked Parrot
- Red-cowled Cardinal
- Red-crested Cotinga
- Red-crowned Ant Tanager
- Red-crowned Crane
- Red-crowned Woodpecker
- Red-eyed Vireo
- Red-faced Cormorant
- Red-faced Spinetail
- Red-faced Warbler
- Red-fan Parrot
- Red-flanked Bluetail
- Red-flanked Lorikeet
- Red-footed Booby
- Red-fronted Coot
- Red-gartered Coot
- Red-headed Barbet
- Red-headed Trogon
- Red-headed Woodpecker
- Red-keeled Flowerpecker
- Red-knobbed Imperial Pigeon
- Red-legged Cormorant
- Red-legged Honeycreeper
- Red-legged Kittiwake
- Red-legged Thrush
- Red-lored Amazon
- Red-masked Parakeet
- Red-naped Sapsucker
- Red-necked Amazon
- Red-necked Grebe
- Red-necked Stint
- Red-necked Tanager
- Red-necked Woodpecker
- Red-ruffed Fruitcrow
- Red-rumped Bush Tyrant
- Red-rumped Cacique
- Red-shouldered Hawk
- Red-tailed Comet
- Red-tailed Hawk
- Red-tailed Minla
- Red-throated Ant Tanager
- Red-throated Caracara
- Red-throated Thrush
- Red-vented Bulbul
- Red-wattled Lapwing
- Red-whiskered Bulbul
- Red-winged Blackbird
- Red Fox Sparrow
- Red Phalarope
- Red Pileated Finch
- Red Tanager
- Red Turtle Dove
- Red Warbler
- Reddish Egret
- Reddish Hermit
- Redhead
- Regent Whistler
- Relict Gull
- Resplendent Quetzal
- Ribbon-tailed Astrapia
- Richard's Pipit
- Ring-billed Gull
- Ring-necked Duck
- Ringed Kingfisher
- Ringed Warbling Finch
- Ringed Woodpecker
- Riverside Wren
- Rivoli's Hummingbird
- Roadside Hawk
- Robin Accentor
- Robust Woodpecker
- Rock Sandpiper
- Rock Sparrow
- Rock Wren
- Rook
- Rose-breasted Grosbeak
- Rose-crowned Parakeet
- Roseate Spoonbill
- Ross's Goose
- Ross's Gull
- Rosy Pipit
- Rough-crested Malkoha
- Rough-legged Buzzard
- Rough-legged Tyrannulet
- Royal Tern
- Ruby-cheeked Sunbird
- Ruby-crowned Kinglet
- Ruby-crowned Tanager
- Ruby-throated Hummingbird
- Ruddy-breasted Crake
- Ruddy Duck
- Ruddy Ground Dove
- Ruddy Pigeon
- Ruddy Turnstone
- Ruddy Woodcreeper
- Rufescent Prinia
- Rufescent Tiger Heron
- Ruffed Grouse
- Rufous-backed Antvireo
- Rufous-backed Thrush
- Rufous-banded Honeyeater
- Rufous-banded Miner
- Rufous-bellied Euphonia
- Rufous-bellied Kookaburra
- Rufous-bellied Niltava
- Rufous-bellied Seedsnipe
- Rufous-bellied Thrush
- Rufous-bellied Woodpecker
- Rufous-breasted Chat-Tyrant
- Rufous-breasted Hermit
- Rufous-breasted Leaftosser
- Rufous-breasted Wren
- Rufous-browed Peppershrike
- Rufous-capped Antshrike
- Rufous-capped Antthrush
- Rufous-capped Babbler
- Rufous-capped Brushfinch
- Rufous-capped Spinetail
- Rufous-capped Warbler
- Rufous-chested Tanager
- Rufous-collared Sparrow
- Rufous-crowned Babbler
- Rufous-crowned Sparrow
- Rufous-faced Warbler
- Rufous-fronted Babbler
- Rufous-fronted Bushtit
- Rufous-fronted Thornbird
- Rufous-headed Chachalaca
- Rufous-headed Ground Roller
- Rufous-naped Bellbird
- Rufous-naped Ground Tyrant
- Rufous-necked Hornbill
- Rufous-necked Laughingthrush
- Rufous-necked Snowfinch
- Rufous-necked Wood Rail
- Rufous-sided Crake
- Rufous-sided Warbling Finch
- Rufous-tailed Babbler
- Rufous-tailed Hummingbird
- Rufous-tailed Jacamar
- Rufous-throated Antbird
- Rufous-throated Dipper
- Rufous-throated Fulvetta
- Rufous-throated Partridge
- Rufous-throated Sapphire
- Rufous-throated Solitaire
- Rufous-vented Tit
- Rufous-vented Yuhina
- Rufous-winged Buzzard
- Rufous-winged Fulvetta
- Rufous Casiornis
- Rufous Gnateater
- Rufous Hornero
- Rufous Hummingbird
- Rufous Spinetail
- Rufous Vanga
- Russet-backed Oropendola
- Russet-crowned Motmot
- Russet-crowned Warbler
- Russet Nightingale-Thrush
- Russet Sparrow
- Rustic Bunting
- Rusty-backed Antwren
- Rusty-capped Fulvetta
- Rusty-collared Seedeater
- Rusty-fronted Barwing
- Rusty-fronted Tody-Flycatcher
- Rusty-margined Flycatcher
- Rusty-vented Canastero
- Rusty Blackbird