| Common Name | Scientific name |
|---|---|
| Sick's Swift | Chaetura meridionalis |
| Sierra Madre Sparrow | Xenospiza baileyi |
| Silver Pheasant | Lophura nycthemera |
| Silver Teal | Anas versicolor |
| Silver-throated Tanager | Tangara icterocephala |
| Silvery-fronted Tapaculo | Scytalopus argentifrons |
| Silvery-throated Jay | Cyanolyca argentigula |
| Sinaloa Crow | Corvus sinaloae |
| Sinaloa Martin | Progne sinaloae |
| Sinaloa Wren | Thryophilus sinaloa |
| Singing Quail | Dactylortyx thoracicus |
| Slate-colored Grosbeak | Saltator grossus |
| Slate-colored Seedeater | Sporophila schistacea |
| Slate-colored Solitaire | Myadestes unicolor |
| Slate-headed Tody-Flycatcher | Poecilotriccus sylvia |
| Slate-throated Gnatcatcher | Polioptila schistaceigula |
| Slate-throated Redstart | Myioborus miniatus |
| Slaty Antwren | Myrmotherula schisticolor |
| Slaty Finch | Haplospiza rustica |
| Slaty Flowerpiercer | Diglossa plumbea |
| Slaty Spinetail | Synallaxis brachyura |
| Slaty Vireo | Vireo brevipennis |
| Slaty-backed Forest-Falcon | Micrastur mirandollei |
| Slaty-backed Gull | Larus schistisagus |
| Slaty-backed Nightingale-Thrush | Catharus fuscater |
RingBase adheres to EURING codes.
