- Sayaca Tanager
- Scarlet-headed Blackbird
- Shikra
- Silver-beaked Tanager
- Silver-throated Tanager
- Silver Gull
- Snail Kite
- Southern Boubou
- Southern Carmine Bee-eater
- Southern Double-collared Sunbird
- Southern Fiscal
- Southern Masked Weaver
- Southern Mealy Amazon
- Southern Rough-winged Swallow
- Sparkling-tailed Woodstar
- Speckled Hummingbird
- Speckled Mousebird
- Spectacled Weaver
- Spinifex Pigeon
- Spotted Woodcreeper
- Stout-billed Cinclodes
- Strong-billed Woodcreeper
- Swallow-tailed Hummingbird