| Common Name | Scientific name |
|---|---|
| Red-crowned Parrot | Amazona viridigenalis |
| Red-crowned Woodpecker | Melanerpes rubricapillus |
| Red-eyed Vireo | Vireo olivaceus |
| Red-faced Cormorant | Phalacrocorax urile |
| Red-faced Spinetail | Cranioleuca erythrops |
| Red-faced Warbler | Cardellina rubrifrons |
| Red-footed Booby | Sula sula |
| Red-footed Falcon | Falco vespertinus |
| Red-fronted Parrotlet | Touit costaricensis |
| Red-headed Barbet | Eubucco bourcierii |
| Red-headed Bunting | Emberiza bruniceps |
| Red-headed Tanager | Piranga erythrocephala |
| Red-headed Woodpecker | Melanerpes erythrocephalus |
| Red-legged Honeycreeper | Cyanerpes cyaneus |
| Red-legged Kittiwake | Rissa brevirostris |
| Red-legged Partridge | Alectoris rufa |
| Red-legged Thrush | Turdus plumbeus |
| Red-lored Parrot | Amazona autumnalis |
| Red-masked Parakeet | Psittacara erythrogenys |
| Red-naped Sapsucker | Sphyrapicus nuchalis |
| Red-necked Grebe | Podiceps grisegena |
| Red-necked Nightjar | Caprimulgus ruficollis |
| Red-necked Parrot | Amazona arausiaca |
| Red-necked Phalarope | Phalaropus lobatus |
| Red-necked Stint | Calidris ruficollis |
RingBase adheres to EURING codes.
