| Common Name | Scientific name |
|---|---|
| Rufous Mourner | Rhytipterna holerythra |
| Tawny-faced Quail | Rhynchortyx cinctus |
| Maroon-fronted Parrot | Rhynchopsitta terrisi |
| Thick-billed Parrot | Rhynchopsitta pachyrhyncha |
| McCown's Longspur | Rhynchophanes mccownii |
| Olivaceous Flatbill | Rhynchocyclus olivaceus |
| Eye-ringed Flatbill | Rhynchocyclus brevirostris |
| Crimson-collared Grosbeak | Rhodothraupis celaeno |
| Ross's Gull | Rhodostethia rosea |
| Desert Finch | Rhodospiza obsoleta |
| Rosy Thrush-Tanager | Rhodinocichla rosea |
| Greater Koa-Finch | Rhodacanthis palmeri |
| Lesser Koa-Finch | Rhodacanthis flaviceps |
| Greater Rhea | Rhea americana |
| Pino colombiano | Retrophyllum rospigliosii |
| Eurasian Penduline Tit | Remiz pendulinus |
| Golden-crowned Kinglet | Regulus satrapa |
| Goldcrest | Regulus regulus |
| Common Firecrest | Regulus ignicapilla |
| Ruby-crowned Kinglet | Regulus calendula |
| Pied Avocet | Recurvirostra avosetta |
| American Avocet | Recurvirostra americana |
| White-breasted Thrasher | Ramphocinclus brachyurus |
| Crimson-collared Tanager | Ramphocelus sanguinolentus |
| Passerini's Tanager | Ramphocelus passerinii |
RingBase adheres to EURING codes.
