- Sardinian Warbler
- Saunders's Tern
- Scarlet Tanager
- Sedge Warbler
- Semipalmated Plover
- Senegal Lapwing
- Short-billed Dowitcher
- Short-tailed Hawk
- Simple Greenbul
- Singing Cisticola
- Slender-billed Gull
- Slender-billed Weaver
- Snow Bunting
- Sooty Chat
- Speckled Mousebird
- Speckled Tinkerbird
- Spotted Flycatcher
- Spotted Nutcracker
- Spruce Grouse
- Squacco Heron
- Square-tailed Nightjar
- Stilt Sandpiper
- Stock Dove
- Striated Heron
- Styan's Bulbul
- Swamp Flycatcher
- Swamp Nightjar
- Swamp Sparrow
- Swinhoe's Pheasant