- Saddle-billed Stork
- Sanderling
- Sandwich Tern
- Savanna Hawk
- Scarlet Ibis
- Scarlet Macaw
- Secretarybird
- Semipalmated Plover
- Semipalmated Sandpiper
- Shiny Cowbird
- Short-billed Dowitcher
- Short-crested Flycatcher
- Short-tailed Hawk
- Short-toed Snake Eagle
- Short-toed Treecreeper
- Sickle-billed Vanga
- Silver-beaked Tanager
- Silverbird
- Silvery-cheeked Hornbill
- Slate-colored Boubou
- Smooth-billed Ani
- Snail Kite
- Snowy Egret
- Solitary Sandpiper
- Sombre Greenbul
- Sooty Falcon
- Sooty Gull
- Souimanga Sunbird
- Southern Ground Hornbill
- Southern House Wren
- Southern Pochard
- Southern Red Bishop
- Speckle-fronted Weaver
- Speckled Mousebird
- Speckled Pigeon
- Spectacled Thrush
- Spot-breasted Woodpecker
- Spot-flanked Barbet
- Spotted Flycatcher
- Spotted Palm Thrush
- Spotted Sandpiper
- Spotted Tody-Flycatcher
- Spur-winged Goose
- Squacco Heron
- Squirrel Cuckoo
- Steppe Eagle
- Straight-billed Woodcreeper
- Streaked Flycatcher
- Streaky Seedeater
- Striated Heron
- Stripe-throated Jery
- Striped Cuckoo
- Striped Kingfisher
- Striped Owl
- Sulphury Flycatcher
- Summer Tanager
- Superb Starling
- Swahili Sparrow
- Swallow-tailed Kite
- Swallow-winged Puffbird