- Rainbow Bee-eater
- Rainbow Lorikeet
- Red-bellied Grackle
- Red-billed Buffalo Weaver
- Red-billed Chough
- Red-billed Firefinch
- Red-billed Leiothrix
- Red-billed Tropicbird
- Red-breasted Goose
- Red-breasted Merganser
- Red-capped Cardinal
- Red-collared Widowbird
- Red-crested Cotinga
- Red-crested Pochard
- Red-crowned Woodpecker
- Red-faced Spinetail
- Red-fronted Macaw
- Red-headed Barbet
- Red-legged Honeycreeper
- Red-legged Partridge
- Red-legged Seriema
- Red-vented Bulbul
- Red-wattled Lapwing
- Red-winged Blackbird
- Red-winged Starling
- Red Wattlebird
- Resplendent Quetzal
- Ring-billed Gull
- Ring-necked Duck
- Ring Ouzel
- Ringed Kingfisher
- Ringed Teal
- Rivoli's Hummingbird
- Roadside Hawk
- Rock Sparrow
- Rose-breasted Grosbeak
- Rose-ringed Parakeet
- Ruddy-breasted Seedeater
- Ruddy Ground Dove
- Ruddy Shelduck
- Ruddy Treerunner
- Ruddy Turnstone
- Ruff
- Ruffed Grouse
- Rufous-bellied Euphonia
- Rufous-capped Warbler
- Rufous-collared Sparrow
- Rufous-crowned Tody-Flycatcher
- Rufous-tailed Hummingbird
- Rufous-throated Tanager
- Rufous-winged Woodpecker
- Rufous Motmot
- Russet-crowned Warbler
- Rusty-margined Flycatcher