- Rainforest Scops Owl
- Razorbill
- Red-backed Shrike
- Red-bellied Macaw
- Red-billed Buffalo Weaver
- Red-billed Firefinch
- Red-billed Quelea
- Red-billed Scythebill
- Red-breasted Flycatcher
- Red-capped Cardinal
- Red-capped Manakin
- Red-crowned Ant Tanager
- Red-crowned Woodpecker
- Red-eyed Dove
- Red-faced Malkoha
- Red-fronted Coua
- Red-headed Weaver
- Red-legged Honeycreeper
- Red-legged Seriema
- Red-naped Ibis
- Red-necked Grebe
- Red-necked Spurfowl
- Red-rumped Woodpecker
- Red-tailed Hawk
- Red-tailed Vanga
- Red-throated Ant Tanager
- Red-throated Caracara
- Red-throated Loon
- Red-vented Bulbul
- Red-wattled Lapwing
- Red-whiskered Bulbul
- Red Collared Dove
- Red Junglefowl
- Reed Cormorant
- Resplendent Quetzal
- Rhinoceros Auklet
- Ringed Kingfisher
- River Lapwing
- Roadside Hawk
- Rock Bunting
- Rock Sparrow
- Rose-ringed Parakeet
- Roseate Spoonbill
- Rosy Pipit
- Rosy Thrush-tanager
- Ruddy-breasted Seedeater
- Ruddy-tailed Flycatcher
- Ruddy Ground Dove
- Ruddy Turnstone
- Rufescent Tiger Heron
- Ruff
- Rufous-bellied Thrush
- Rufous-breasted Hermit
- Rufous-browed Peppershrike
- Rufous-capped Warbler
- Rufous-collared Sparrow
- Rufous-crested Coquette
- Rufous-tailed Hummingbird
- Rufous-tailed Jacamar
- Rufous-tailed Weaver
- Rufous Hornero
- Rufous Motmot
- Rufous Sibia
- Rufous Treepie
- Rufous Vanga
- Rufous Woodpecker
- Rusty Blackbird