- Razorbill
- Red-billed Firefinch
- Red-breasted Nuthatch
- Red-breasted Toucan
- Red-capped Cardinal
- Red-cheeked Cordon-bleu
- Red-crested Cardinal
- Red-crowned Woodpecker
- Red-gartered Coot
- Red-legged Honeycreeper
- Red-lored Amazon
- Red-rumped Swallow
- Red-wattled Lapwing
- Red-whiskered Bulbul
- Red-winged Tinamou
- Red Fody
- Red Junglefowl
- Red Shoveler
- Reddish Egret
- Redwing
- Ring-billed Gull
- Rock Dove
- Rock Shag
- Rook
- Rose-ringed Parakeet
- Roseate Spoonbill
- Ross's Goose
- Royal Tern
- Ruddy Ground Dove
- Ruddy Shelduck
- Ruddy Turnstone
- Ruff
- Rufous-collared Sparrow
- Rufous-tailed Hummingbird
- Rufous-vented Chachalaca
- Rufous Hornero
- Rufous Sabrewing
- Rufous Whistler
- Russet-backed Oropendola