| Common Name | Scientific name |
|---|---|
| Sharp-shinned Hawk | Accipiter striatus |
| Sepia-capped Flycatcher | Leptopogon amaurocephalus |
| Senegal Parrot | Poicephalus senegalus |
| Semper's Warbler | Leucopeza semperi |
| Semiplumbeous Hawk | Leucopternis semiplumbeus |
| Semipalmated Sandpiper | Calidris pusilla |
| Semipalmated Plover | Charadrius semipalmatus |
| Semicollared Flycatcher | Ficedula semitorquata |
| Sedge Wren | Cistothorus platensis |
| Sedge Warbler | Acrocephalus schoenobaenus |
| Seaside Sparrow | Ammodramus maritimus |
| Scrub Greenlet | Hylophilus flavipes |
| Scrub Euphonia | Euphonia affinis |
| Scripps's Murrelet | Synthliboramphus scrippsi |
| Scottish Crossbill | Loxia scotica |
| Scott's Oriole | Icterus parisorum |
| Scissor-tailed Flycatcher | Tyrannus forficatus |
| Scintillant Hummingbird | Selasphorus scintilla |
| Scarlet-thighed Dacnis | Dacnis venusta |
| Scarlet-rumped Cacique | Cacicus uropygialis |
| Scarlet-headed Blackbird | Amblyramphus holosericeus |
| Scarlet-browed Tanager | Heterospingus xanthopygius |
| Scarlet Tanager | Piranga olivacea |
| Scarlet Macaw | Ara macao |
| Scarlet Ibis | Eudocimus ruber |
RingBase adheres to EURING codes.
