- Saddle-billed Stork
- Sand Martin
- Sanderling
- Sandwich Tern
- Sardinian Warbler
- Savannah Sparrow
- Savi's Warbler
- Scaly-breasted Munia
- Scarlet-chested Sunbird
- Secretarybird
- Sedge Warbler
- Semicollared Flycatcher
- Senegal Coucal
- Senegal Eremomela
- Senegal Parrot
- Senegal Thick-knee
- Seychelles Black Parrot
- Seychelles Blue Pigeon
- Seychelles Bulbul
- Seychelles Kestrel
- Seychelles Paradise Flycatcher
- Seychelles Sunbird
- Sharpe's Longclaw
- Shiny Cowbird
- Short-toed Snake Eagle
- Short-toed Treecreeper
- Siamese Pied Myna
- Silver-eared Mesia
- Silver Pheasant
- Slate-colored Boubou
- Slender-billed Gull
- Slender-tailed Nightjar
- Smooth-billed Ani
- Snowy Egret
- Somali Ostrich
- Sombre Tit
- Song Sparrow
- Song Thrush
- Southern Fiscal
- Southern White-faced Owl
- Spanish Sparrow
- Speckle-fronted Weaver
- Speckled Mousebird
- Speckled Pigeon
- Spectacled Weaver
- Speke's Weaver
- Splendid Sunbird
- Spotless Starling
- Spotted Dove
- Spotted Flycatcher
- Spotted Palm Thrush
- Spotted Redshank
- Spur-winged Lapwing
- Squacco Heron
- Steppe Eagle
- Stock Dove
- Streak-eared Bulbul
- Streaky Seedeater
- Striated Heron
- Summer Tanager
- Superb Starling
- Swan Goose
- Syrian Woodpecker