| Solomons Frogmouth Rigidipenna inexpectata | Podargiformes / Podargidae | NT |
| Congo Martin Riparia congica | Passeriformes / Hirundinidae | LC |
| Madagascar Martin Riparia cowani | Passeriformes / Hirundinidae | LC |
| Brown-throated Martin Riparia paludicola | Passeriformes / Hirundinidae | LC |
| Red-legged Kittiwake Rissa brevirostris | Charadriiformes / Laridae | VU |
| Cordillera Ground Warbler Robsonius rabori | Passeriformes / Locustellidae | NT |
| Bicol Ground Warbler Robsonius sorsogonensis | Passeriformes / Locustellidae | NT |
| Sierra Madre Ground Warbler Robsonius thompsoni | Passeriformes / Locustellidae | LC |
| Titicaca Grebe Rollandia microptera | Podicipediformes / Podicipedidae | EN |
| White-tufted Grebe Rollandia rolland | Podicipediformes / Podicipedidae | LC |
| Crested Partridge Rollulus rouloul | Galliformes / Phasianidae | VU |
| Roraiman Barbtail Roraimia adusta | Passeriformes / Furnariidae | LC |
| Australian Painted-snipe Rostratula australis | Charadriiformes / Rostratulidae | EN |
| Snail Kite Rostrhamus sociabilis | Accipitriformes / Accipitridae | LC |
| Rouget's Rail Rougetius rougetii | Gruiformes / Rallidae | NT |
| Gough Finch Rowettia goughensis | Passeriformes / Thraupidae | CR |
| Grey-bellied Bulbul Rubigula cyaniventris | Passeriformes / Pycnonotidae | NT |
| Ruby-throated Bulbul Rubigula dispar | Passeriformes / Pycnonotidae | VU |
| Spectacled Bulbul Rubigula erythropthalmos | Passeriformes / Pycnonotidae | LC |
| Flame-throated Bulbul Rubigula gularis | Passeriformes / Pycnonotidae | LC |
| Bornean Bulbul Rubigula montis | Passeriformes / Pycnonotidae | LC |
| Scaly-breasted Bulbul Rubigula squamata | Passeriformes / Pycnonotidae | NT |
| Black-banded Crake Rufirallus fasciatus | Gruiformes / Rallidae | LC |
| Red-and-white Crake Rufirallus leucopyrrhus | Gruiformes / Rallidae | LC |
| Ocellated Crake Rufirallus schomburgkii | Gruiformes / Rallidae | LC |
| Russet-crowned Crake Rufirallus viridis | Gruiformes / Rallidae | LC |
| Rufous-faced Crake Rufirallus xenopterus | Gruiformes / Rallidae | VU |
| Long-billed White-eye Rukia longirostra | Passeriformes / Zosteropidae | NT |
| Teardrop White-eye Rukia ruki | Passeriformes / Zosteropidae | EN |
| Andean Cock-of-the-rock Rupicola peruvianus | Passeriformes / Cotingidae | LC |
| Guianan Cock-of-the-rock Rupicola rupicola | Passeriformes / Cotingidae | LC |
| Roadside Hawk Rupornis magnirostris | Accipitriformes / Accipitridae | LC |
| African Skimmer Rynchops flavirostris | Charadriiformes / Laridae | LC |
| Black Skimmer Rynchops niger | Charadriiformes / Laridae | LC |
| Secretarybird Sagittarius serpentarius | Accipitriformes / Sagittariidae | EN |
| Silvery-cheeked Antshrike Sakesphoroides cristatus | Passeriformes / Thamnophilidae | LC |
| Black-crested Antshrike Sakesphorus canadensis | Passeriformes / Thamnophilidae | LC |
| Glossy Antshrike Sakesphorus luctuosus | Passeriformes / Thamnophilidae | LC |
| Streak-fronted Antshrike Sakesphorus pulchellus | Passeriformes / Thamnophilidae | LC |
| Rock Wren Salpinctes obsoletus | Passeriformes / Troglodytidae | LC |
| African Spotted Creeper Salpornis salvadori | Passeriformes / Salpornithidae | LC |
| Indian Spotted Creeper Salpornis spilonota | Passeriformes / Salpornithidae | LC |
| Lesser Antillean Saltator Saltator albicollis | Passeriformes / Thraupidae | LC |
| Black-headed Saltator Saltator atriceps | Passeriformes / Thraupidae | LC |
| Black-winged Saltator Saltator atripennis | Passeriformes / Thraupidae | LC |
| Golden-billed Saltator Saltator aurantiirostris | Passeriformes / Thraupidae | LC |
| Masked Saltator Saltator cinctus | Passeriformes / Thraupidae | LC |
| Bluish-grey Saltator Saltator coerulescens | Passeriformes / Thraupidae | LC |
| Black-throated Grosbeak Saltator fuliginosus | Passeriformes / Thraupidae | LC |
| Cinnamon-bellied Saltator Saltator grandis | Passeriformes / Thraupidae | LC |