- Sanderling
- Sandwich Tern
- Sardinian Warbler
- Savannah Sparrow
- Senegal Coucal
- Seychelles Black Parrot
- Seychelles Blue Pigeon
- Seychelles Bulbul
- Seychelles Kestrel
- Seychelles Paradise Flycatcher
- Seychelles Sunbird
- Short-toed Snake Eagle
- Smooth-billed Ani
- Snowy Egret
- Sombre Tit
- Song Sparrow
- Song Thrush
- Spanish Sparrow
- Splendid Sunbird
- Spotted Nutcracker
- Squacco Heron
- Stock Dove
- Striated Heron
- Subalpine Warbler