| Common Name | Scientific name |
|---|---|
| Southern Beardless-Tyrannulet | Camptostoma obsoletum |
| Southern Bentbill | Oncostoma olivaceum |
| Southern Ground-Hornbill | Bucorvus leadbeateri |
| Southern Lapwing | Vanellus chilensis |
| Southern Martin | Progne elegans |
| Southern Red Bishop | Euplectes orix |
| Southern Rough-winged Swallow | Stelgidopteryx ruficollis |
| Spangle-cheeked Tanager | Tangara dowii |
| Spanish Imperial Eagle | Aquila adalberti |
| Spanish Sparrow | Passer hispaniolensis |
| Sparkling-tailed Hummingbird | Tilmatura dupontii |
| Speckled Mourner | Laniocera rufescens |
| Speckled Tanager | Tangara guttata |
| Spectacled Eider | Somateria fischeri |
| Spectacled Owl | Pulsatrix perspicillata |
| Spectacled Parrotlet | Forpus conspicillatus |
| Spectacled Thrush | Turdus nudigenis |
| Spectacled Warbler | Sylvia conspicillata |
| Spiny-faced Antshrike | Xenornis setifrons |
| Splendid Starling | Lamprotornis splendidus |
| Spoon-billed Sandpiper | Calidris pygmea |
| Spot-billed Duck | Anas poecilorhyncha |
| Spot-breasted Oriole | Icterus pectoralis |
| Spot-breasted Woodpecker | Colaptes punctigula |
| Spot-breasted Wren | Pheugopedius maculipectus |
RingBase adheres to EURING codes.
