- Rattling Cisticola
- Red-and-green Macaw
- Red-backed Flameback
- Red-backed Shrike
- Red-bellied Macaw
- Red-billed Buffalo Weaver
- Red-billed Chough
- Red-billed Teal
- Red-billed Tropicbird
- Red-breasted Meadowlark
- Red-breasted Parakeet
- Red-capped Lark
- Red-cowled Cardinal
- Red-crowned Woodpecker
- Red-eyed Dove
- Red-eyed Vireo
- Red-fan Parrot
- Red-fronted Barbet
- Red-fronted Coot
- Red-gartered Coot
- Red-headed Weaver
- Red-legged Cormorant
- Red-legged Partridge
- Red-legged Thrush
- Red-necked Amazon
- Red-necked Woodpecker
- Red-rumped Cacique
- Red-rumped Swallow
- Red-tailed Hawk
- Red-throated Caracara
- Red-vented Bulbul
- Red-wattled Lapwing
- Red-whiskered Bulbul
- Red-winged Starling
- Red Fody
- Red Knot
- Reddish Egret
- Reddish Hermit
- Redwing
- Reunion Bulbul
- Reunion Grey White-eye
- Reunion Olive White-eye
- Reunion Stonechat
- Ring-necked Dove
- Ring-necked Duck
- Ringed Antpipit
- Ringed Kingfisher
- Ringed Woodpecker
- Riverbank Warbler
- Roadside Hawk
- Rock Dove
- Rock Martin
- Rook
- Rose-ringed Parakeet
- Roseate Spoonbill
- Rosy-faced Lovebird
- Royal Tern
- Ruby-topaz Hummingbird
- Ruddy-breasted Seedeater
- Ruddy-tailed Flycatcher
- Ruddy Ground Dove
- Ruddy Pigeon
- Ruddy Shelduck
- Ruddy Turnstone
- Rufescent Tiger Heron
- Rufous-bellied Antwren
- Rufous-breasted Hermit
- Rufous-breasted Wren
- Rufous-browed Peppershrike
- Rufous-collared Sparrow
- Rufous-naped Lark
- Rufous-rumped Foliage-gleaner
- Rufous-tailed Hummingbird
- Rufous-tailed Weaver
- Rufous-tailed Xenops
- Rufous-throated Antbird
- Rufous-throated Sapphire
- Rufous-vented Chachalaca
- Rufous-winged Buzzard
- Rufous Crab Hawk
- Rufous Treepie
- Rüppell's Starling
- Rüppell's Vulture
- Rusty-margined Flycatcher