- Rainbow-bearded Thornbill
- Red-bellied Woodpecker
- Red-billed Pigeon
- Red-billed Streamertail
- Red-breasted Meadowlark
- Red-breasted Merganser
- Red-breasted Nuthatch
- Red-crowned Woodpecker
- Red-eyed Vireo
- Red-headed Barbet
- Red-headed Tanager
- Red-headed Woodpecker
- Red-legged Honeycreeper
- Red-legged Thrush
- Red-necked Phalarope
- Red-shouldered Blackbird
- Red-shouldered Hawk
- Red-tailed Hawk
- Red-throated Ant Tanager
- Red-throated Loon
- Red-winged Blackbird
- Red Crossbill
- Red Fox Sparrow
- Reddish Egret
- Redpoll
- Resplendent Quetzal
- Ring-billed Gull
- Ring-necked Duck
- Ringed Kingfisher
- Rivoli's Hummingbird
- Roadside Hawk
- Rose-breasted Grosbeak
- Rose-throated Becard
- Rose-throated Tanager
- Roseate Spoonbill
- Rosy Thrush-tanager
- Rough-legged Buzzard
- Royal Tern
- Ruby-crowned Kinglet
- Ruby-throated Hummingbird
- Ruddy-capped Nightingale-Thrush
- Ruddy Ground Dove
- Ruddy Turnstone
- Rufescent Tiger Heron
- Ruffed Grouse
- Rufous-backed Thrush
- Rufous-breasted Chat-Tyrant
- Rufous-capped Warbler
- Rufous-collared Sparrow
- Rufous-crowned Tody-Flycatcher
- Rufous-gaped Hillstar
- Rufous-tailed Flycatcher
- Rufous-tailed Hummingbird
- Rufous-tailed Jacamar
- Rufous-throated Tanager
- Rufous-winged Woodpecker
- Rufous Hummingbird
- Rufous Motmot
- Russet-backed Oropendola
- Russet-crowned Motmot
- Russet-throated Puffbird
- Russet-winged Schiffornis
- Rusty-margined Flycatcher
- Rusty Blackbird