- Saddle-billed Stork
- Saffron Finch
- Saker Falcon
- Salvadori's Fig Parrot
- Sandhill Crane
- Sarus Crane
- Satyr Tragopan
- Scarlet-chested Sunbird
- Scarlet-headed Blackbird
- Scarlet-rumped Tanager
- Scarlet Flycatcher
- Scarlet Ibis
- Scarlet Macaw
- Scintillant Hummingbird
- Sclater's Crowned Pigeon
- Secretarybird
- Senegal Parrot
- Shoebill
- Short-eared Owl
- Short-toed Snake Eagle
- Short-toed Treecreeper
- Siamese Fireback
- Siberian Crane
- Sickle-billed Vanga
- Silver Pheasant
- Silver Teal
- Slaty-tailed Trogon
- Smew
- Snowy-crowned Robin-Chat
- Snowy Egret
- Snowy Owl
- Sooty-capped Chlorospingus
- South African Shelduck
- Southern Cassowary
- Southern Red Bishop
- Spangled Cotinga
- Speckled Mousebird
- Speckled Pigeon
- Speke's Weaver
- Splendid Sunbird
- Spot-billed Pelican
- Spot-crowned Woodcreeper
- Spotted Eagle-Owl
- Spotted Laughingthrush
- Spotted Sandpiper
- Square-tailed Drongo-Cuckoo
- Steller's Jay
- Stork-billed Kingfisher
- Straw-necked Ibis
- Streak-backed Oriole
- Streak-eared Bulbul
- Sulphur-crested Cockatoo
- Sumatran Trogon
- Sunbittern
- Sunda Zebra Finch
- Superb Starling
- Swan Goose