Silver Gull
Silver Gull (scopulinus)
Silver Pheasant
Silver-beaked Tanager
Silver-breasted Broadbill
Silvereye
Singing Honeyeater
Singing Starling
Slate-colored Seedeater
Slate-throated Whitestart
Slaty Brushfinch
Slaty-backed Chat-Tyrant
Slaty-backed Forktail
Slaty-breasted Rail
Slaty-crowned Antpitta
Slender-billed Crow
Slender-billed Greenbul