- Rainbow Starfrontlet
- Rattling Cisticola
- Razorbill
- Red-and-green Macaw
- Red-backed Shrike
- Red-bellied Macaw
- Red-billed Buffalo Weaver
- Red-billed Firefinch
- Red-billed Oxpecker
- Red-billed Pied Tanager
- Red-billed Quelea
- Red-billed Scythebill
- Red-billed Spurfowl
- Red-billed Teal
- Red-billed Tropicbird
- Red-billed Woodcreeper
- Red-breasted Meadowlark
- Red-breasted Merganser
- Red-breasted Swallow
- Red-capped Cardinal
- Red-capped Lark
- Red-capped Robin-Chat
- Red-crested Cotinga
- Red-crested Korhaan
- Red-crested Pochard
- Red-eyed Dove
- Red-eyed Vireo
- Red-faced Crombec
- Red-faced Mousebird
- Red-fan Parrot
- Red-flanked Bluetail
- Red-footed Booby
- Red-headed Barbet
- Red-headed Finch
- Red-headed Weaver
- Red-knobbed Coot
- Red-legged Honeycreeper
- Red-masked Parakeet
- Red-necked Phalarope
- Red-necked Woodpecker
- Red-rumped Bush Tyrant
- Red-rumped Cacique
- Red-shouldered Tanager
- Red-throated Caracara
- Red-throated Loon
- Red-throated Pipit
- Red-winged Starling
- Red Crossbill
- Red Kite
- Red Knot
- Red Pileated Finch
- Red Tanager
- Reddish Hermit
- Redpoll
- Redpoll (hornemanni)
- Redwing
- Reed Cormorant
- Retz's Helmetshrike
- Ring-necked Dove
- Ring-necked Duck
- Ringed Antpipit
- Ringed Kingfisher
- Riverbank Warbler
- Roadside Hawk
- Rock Bunting
- Rock Kestrel
- Rock Sparrow
- Rose-breasted Chat
- Roseate Spoonbill
- Rosy-faced Lovebird
- Rough-legged Buzzard
- Royal Tern
- Ruby-topaz Hummingbird
- Rudd's Apalis
- Ruddy-breasted Seedeater
- Ruddy-tailed Flycatcher
- Ruddy Foliage-gleaner
- Ruddy Ground Dove
- Ruddy Pigeon
- Ruddy Quail-Dove
- Ruddy Turnstone
- Rufescent Tiger Heron
- Ruff
- Rufous-bellied Antwren
- Rufous-bellied Heron
- Rufous-breasted Chat-Tyrant
- Rufous-breasted Hermit
- Rufous-browed Peppershrike
- Rufous-browed Tyrannulet
- Rufous-capped Antthrush
- Rufous-chested Tanager
- Rufous-collared Sparrow
- Rufous-crowned Tody-Flycatcher
- Rufous-fronted Thornbird
- Rufous-headed Chachalaca
- Rufous-naped Lark
- Rufous-rumped Antwren
- Rufous-tailed Flatbill
- Rufous-tailed Foliage-gleaner
- Rufous-tailed Hummingbird
- Rufous-tailed Xenops
- Rufous-throated Antbird
- Rufous-throated Sapphire
- Rufous-throated Tanager
- Rufous Crab Hawk
- Rufous Potoo
- Rufous Wren
- Rüppell's Korhaan
- Rüppell's Parrot
- Russet-backed Oropendola
- Russet-crowned Crake
- Rustic Bunting
- Rusty-breasted Nunlet
- Rusty-margined Flycatcher