- Saddle-billed Stork
- Saffron-billed Sparrow
- Saffron-crowned Tanager
- Saffron Finch
- Sand Martin
- Sanderling
- Sandwich Tern
- Sardinian Warbler
- Savanna Hawk
- Savile's Bustard
- Sayaca Tanager
- Scale-crested Pygmy Tyrant
- Scaled Dove
- Scaled Piculet
- Scaled Pigeon
- Scaly-headed Parrot
- Scarlet-browed Tanager
- Scarlet-chested Sunbird
- Scarlet-rumped Tanager
- Scarlet-thighed Dacnis
- Scarlet Flycatcher
- Scarlet Ibis
- Scarlet Macaw
- Scissor-tailed Kite
- Scrub Blackbird
- Scrub Tanager
- Secretarybird
- Semiplumbeous Hawk
- Senegal Coucal
- Senegal Eremomela
- Senegal Lapwing
- Senegal Parrot
- Senegal Thick-knee
- Sepia-brown Wren
- Shikra
- Shining Honeycreeper
- Shiny Cowbird
- Shoebill
- Short-crested Flycatcher
- Short-tailed Hawk
- Short-toed Snake Eagle
- Short-toed Treecreeper
- Shrike-like Tanager
- Sibilant Sirystes
- Sickle-winged Guan
- Sierran Elaenia
- Silver-beaked Tanager
- Silver-throated Tanager
- Slate-colored Boubou
- Slate-throated Whitestart
- Slaty Brushfinch
- Slaty Flowerpiercer
- Slender-billed Greenbul
- Slender-billed Gull
- Slender-billed Weaver
- Small-billed Elaenia
- Smoke-colored Pewee
- Smoky-brown Woodpecker
- Smooth-billed Ani
- Snail Kite
- Snowy Egret
- Social Flycatcher
- Solitary Cacique
- Solitary Sandpiper
- Song Thrush
- Sooty-capped Chlorospingus
- Sooty-headed Tyrannulet
- Sooty Chat
- Southern Beardless Tyrannulet
- Southern Ground Hornbill
- Southern House Wren
- Southern Lapwing
- Southern Mouse-colored Tyrannulet
- Southern Red Bishop
- Southern Rough-winged Swallow
- Southern Screamer
- Spangle-cheeked Tanager
- Sparkling Violetear
- Speckle-breasted Woodpecker
- Speckled Chachalaca
- Speckled Hummingbird
- Speckled Mousebird
- Speckled Pigeon
- Spectacled Owl
- Spectacled Weaver
- Spectacled Whitestart
- Splendid Starling
- Splendid Sunbird
- Spot-breasted Woodpecker
- Spot-flanked Gallinule
- Spot-tailed Nightjar
- Spotted Barbtail
- Spotted Eagle-Owl
- Spotted Flycatcher
- Spotted Palm Thrush
- Spotted Redshank
- Spotted Thick-knee
- Spotted Woodcreeper
- Spur-winged Goose
- Spur-winged Lapwing
- Squacco Heron
- Squirrel Cuckoo
- Steel-blue Whydah
- Steely-vented Hummingbird
- Stock Dove
- Stone Partridge
- Stout Cisticola
- Straight-billed Woodcreeper
- Streak-capped Treehunter
- Streak-headed Woodcreeper
- Streaked Flycatcher
- Streaked Tuftedcheek
- Streaked Xenops
- Striated Heron
- Stripe-headed Sparrow
- Stripe-necked Tody-Tyrant
- Stripe-throated Hermit
- Striped Cuckoo
- Striped Kingfisher
- Striped Treehunter
- Strong-billed Woodcreeper
- Stygian Owl
- Subtropical Cacique
- Sudan Golden Sparrow
- Suiriri Flycatcher
- Summer Tanager
- Sunbittern
- Sungrebe
- Superb Sunbird
- Swainson's Thrush
- Swallow-tailed Bee-eater
- Swallow-tailed Hummingbird
- Swallow-tailed Kite
- Swallow-winged Puffbird
- Swallow Tanager
- Swamp Flycatcher
- Sword-billed Hummingbird