- Sparrow, Golden-crowned / Zonotrichia atricapilla
- Sparrow, Grasshopper / Ammodramus savannarum
- Sparrow, Half-collared / Arremon semitorquatus
- Sparrow, House / Passer domesticus
- Sparrow, Italian / Passer italiae
- Sparrow, Java / Padda oryzivora
- Sparrow, Kenya Rufous / Passer rufocinctus
- Sparrow, Lark / Chondestes grammacus
- Sparrow, Lincoln’s / Melospiza lincolnii
- Sparrow, Northern Gray-headed / Passer griseus
- Sparrow, Olive / Arremonops rufivirgatus
- Sparrow, Orange-billed / Arremon aurantiirostris
- Sparrow, Parrot-billed / Passer gongonensis
- Sparrow, Plain-backed / Passer flaveolus
- Sparrow, Rufous-collared / Zonotrichia capensis
- Sparrow, Rufous-crowned / Aimophila ruficeps
- Sparrow, Rufous-winged / Peucaea carpalis
- Sparrow, Savannah / Passerculus sandwichensis
- Sparrow, Song / Melospiza melodia
- Sparrow, Spanish / Passer hispaniolensis
- Sparrow, Swamp / Melospiza georgiana
- Sparrow, Tumbes / Rhynchospiza stolzmanni
- Sparrow, Vesper / Pooecetes gramineus
- Sparrow, White-crowned / Zonotrichia leucophrys
- Sparrow, White-throated / Zonotrichia albicollis
- Sparrow, Yellow-browed / Ammodramus aurifrons
- Sparrowhawk, Chinese / Accipiter soloensis
- Sparrowhawk, Eurasian / Accipter nisus
- Sparrowhawk, Levant / Accipiter brevipes
- Sparrowhawk, Ovambo / Accipiter ovampensis
- Spiderhunter, Bornean / Arachnothera everetti
- Spiderhunter, Purple-naped / Kurochkinegramma hypogrammicum
- Spiderhunter, Streaked / Arachnothera magna
- Spinebill, Eastern / Acanthorhynchus tenuirostris
- Spinetail, Andean Tit- / Leptasthenura andicola
- Spinetail, Araucaria Tit- / Leptasthenura setaria
- Spinetail, Creamy-crested / Cranioleuca albicapilla
- Spinetail, Pale-breasted / Synallaxis albescens
- Spinetail, Red-faced / Cranioleuca erythrops
- Spinetail, Rufous / Synallaxis unirufa
- Spinetail, Yellow-chinned / Certhiaxis cinnamomeus
- Spoonbill, African / Platalea alba
- Spoonbill, Eurasian / Platalea leucorodia
- Spoonbill, Roseate / Platalea ajaja
- Spoonbill, Royal / Platalea regia
- Spoonbill, Yellow-billed / Platalea flavipes
- Spurfowl, Erckel's / Pternistis erckelii
- Spurfowl, Red-necked / Pternstis afer
- Spurfowl, Yellow-necked / Pternstis leucoscepus
- Starling, Asian Glossy / Aplonis panayensis
- Starling, Black-collared / Gracupica nigricollis
- Starling, Bristle-crowned / Onychognathus salvadorii
- Starling, Chestnut-tailed / Sturnia malabarica
- Starling, European / Sturnus vulgaris
- Starling, Greater Blue-eared / Lamprotornis chalybaeus
- Starling, Hildebrandts / Lamprotornis hildebrandti
- Starling, Metallic / Aplonis metallica
- Starling, Rüppells / Lamprotornis purpuroptera
- Starling, Siamese Pied / Gracupica floweri
- Starling, Spotless / Sturnus unicolor
- Starling, Superb / Lamprotornis superbus
- Starling, Violet-backed / Cinnyricinclus leucogaster
- Starling, Wattled / Creatophora cinerea
- Stilt, Banded / Cladorhynchus leucocephalus
- Stilt, Black-necked / Himantopus mexicanus
- Stilt, Black-winged / Himantopus himantopus
- Stilt, Pied / Himantopus leucocephalus
- Stint, Little / Calidris minuta
- Stint, Long-toed / Calidris subminuta
- Stint, Red-necked / Calidris ruficollis
- Stint, Temmincks / Calidris temminckii
- Stipplethroat, Ornate / Epinecrophylla ornata
- Stonechat, Amur / Saxicola stejnegeri
- Stonechat, European / Saxicola rubicola
- Stork, Abdim's / Ciconia abdimii
- Stork, Black / Ciconia nigra
- Stork, Black-necked / Ephippiorhynchus asiaticus
- Stork, Marabou / Leptoptilos crumenifer
- Stork, Painted / Mycteria leucocephala
- Stork, Storm's / Ciconia stormi
- Stork, White / Ciconia ciconia
- Stork, Wood / Mycteria americana
- Stork, Yellow-billed / Mycteria ibis
- Sunbird, Amethyst / Chalcomitra amethystina
- Sunbird, Beautiful / Cinnyris pulchellus
- Sunbird, Bronze / Nectarinia kilimensis
- Sunbird, Brown-throated / Anthreptes malacensis
- Sunbird, Crimson / Aethopyga siparaja
- Sunbird, Eastern Violet-backed / Anthreptes orientalis
- Sunbird, Golden-winged / Drepanorhynchus reichenowi
- Sunbird, Green-headed / Cyanomitra verticalis
- Sunbird, Green-tailed / Aethopyga nipalensis
- Sunbird, Marico / Cinnyris mariquensis
- Sunbird, Mrs. Gould's / Aethopyga gouldiae
- Sunbird, Northern Double-collared / Cinnyris reichenowi
- Sunbird, Ornate / Cinnyris ornatus
- Sunbird, Plain / Anthreptes simplex
- Sunbird, Purple / Cinnyris asiaticus
- Sunbird, Red-chested / Cinnyris erythrocercus
- Sunbird, Ruby-cheeked / Chalcoparia singalensis
- Sunbird, Scarlet-chested / Chalcomitra senegalensis
- Sunbird, Sahul / Cinnyris frenatus
- Sunbird, Temminck's / Aethopyga temminckii
- Sunbird, Variable / Cinnyris venustus
- Sungrebe / Heliornis fulica
- Swallow, Bank / Riparia riparia
- Swallow, Barn / Hirundo rustica
- Swallow, Blue-and-white / Pygochelidon cyanoleuca
- Swallow, Chestnut-collared / Petrochelidon rufocollaris
- Swallow, Cliff / Petrochelidon pyrrhonota
- Swallow, Lesser Striped / Cecropis abyssinica
- Swallow, Mangrove / Tachycineta albilinea
- Swallow, Mosque / Cecropis senegalensis
- Swallow, Northern Rough-winged / Stelgidopteryx serripennis
- Swallow, Pacific / Hirundo tahitica
- Swallow, Red-rumped / Cecropis daurica
- Swallow, Southern Rough-winged / Stelgidopteryx ruficollis
- Swallow, Striated / Cecropis striolata
- Swallow, Tawny-headed / Alopochelidon fucata
- Swallow, Tree / Tachycineta bicolor
- Swallow, Violet-green / Tachycineta thalassina
- Swallow, Welcome / Hirundo neoxena
- Swallow, White-banded / Atticora fasciata
- Swallow, White-rumped / Tachycineta leucorrhoa
- Swallow, White-winged / Tachycineta albiventer
- Swallow, Wire-tailed / Hirundo smithii
- Swamphen, Australasian / Porphyrio melanotus
- Swamphen, Gray-headed / Porphyrio poliocephalus
- Swamphen, Western / Porphyrio porphyrio
- Swan, Black / Cygnus atratus
- Swan, Black-necked / Cygnus melancoryphus
- Swan, Coscoroba / Coscoroba coscoroba
- Swan, Mute / Cygnus olor
- Swan, Trumpeter / Cygnus buccinator
- Swan, Tundra / Cygnus columbianus
- Swift, African / Apus barbatus
- Swift, Alpine / Tachymarptis melba
- Swift, Asian Palm / Cypsiurus balasiensis
- Swift, Chimney / Chaetura pelagica
- Swift, House / Apus nipalensis
- Swift, White-collared / Streptoprocne zonaris
- Swift, White-rumped / Apus caffer
- Swiftlet, Australian / Aerodramus terraereginae
- Swiftlet, Black-nest / Aerodramus maximus
- Swiftlet, Himalayan / Aerodramus brevirostris
- Swiftlet, Plume-toed / Collocalia affinis
- Riflebird, Paradise / Ptiloris paradiseus
- Ringneck, Australian / Barnardius zonarius
- Roadrunner, Greater / Geococcyx californianus
- Robin, American / Turdus migratorius
- Robin, Eastern Yellow / Eopsaltria australis
- Robin, European / Erithacus rubecula
- Robin, Gray-headed / Heteromyias cinereifrons
- Robin, Hooded / Melanodryas cucullata
- Robin, Oriental Magpie- / Copsychus saularis
- Robin, Red-capped / Petroica goodenovii
- Robin, Rose / Petroica rosea
- Robin, Rufous-backed / Turdus rufopalliatus
- Robin, Scarlet / Petroica boodang
- Robin, Siberian Blue / Larvivora cyane
- Robin, Western Yellow / Tolmomyias sulphurescens
- Robin, White-tailed / Myiomela leucura
- Roller, Broad-billed / Eurystomus glaucurus
- Roller, European / Coracias garrulus
- Roller, Indian / Coracias benghalensis
- Roller, Lilac-breasted / Coracias caudatus
- Roller, Rufous-crowned / Coracias naevius
- Rook, / Corvus frugilegus
- Rosefinch, Common / Carpodacus erythrinus
- Rosella, Crimson / Platycercus elegans
- Rosella, Eastern / Platycercus eximius
- Rubythroat, Siberian / Calliope calliope
- Ruff / Calidris pugnax
- Saltator, Black-cowled / Saltator nigriceps
- Saltator, Black-headed / Saltator atriceps
- Saltator, Black-winged / Saltator atripennis
- Saltator, Bluish-gray / Saltator coerulescens
- Saltator, Buff-throated / Saltator maximus
- Saltator, Cinnamon-bellied / Saltator grandis
- Saltator, Golden-Billed / Saltator aurantiirostris
- Saltator, Green-winged / Saltator similis
- Saltator, Olive-gray / Saltator olivascens
- Saltator, Streaked / Saltator striatipectus
- Sanderling / Calidris alba
- Sandgrouse, Yellow-throated / Pterocles gutturalis
- Sandpiper, Baird's / Calidris bairdii
- Sandpiper, Broad-billed / Calidris falcinellus
- Sandpiper, Common / Actitis hypoleucos
- Sandpiper, Curlew / Calidris ferruginea
- Sandpiper, Green / Tringa ochropus
- Sandpiper, Least / Calidris minutilla
- Sandpiper, Marsh / Tringa stagnatilis
- Sandpiper, Pectoral / Calidris melanotos
- Sandpiper, Semipalmated / Calidris pusilla
- Sandpiper, Sharp-tailed / Calidris acuminata
- Sandpiper, Solitary / Tringa solitaria
- Sandpiper, Spoon-billed / Calidris pygmaea
- Sandpiper, Spotted / Actitis macularius
- Sandpiper, Stilt / Calidris himantopus
- Sandpiper, Terek / Xenus cinereus
- Sandpiper, Upland / Bartramia longicauda
- Sandpiper, Western / Calidris mauri
- Sandpiper, Wood / Tringa glareola
- Sapsucker, Red-breasted / Sphyrapicus ruber
- Sapsucker, Red-naped / Sphyrapicus nuchalis
- Sapsucker, Williamson's / Sphyrapicus thyroideus
- Sapsucker, Yellow-bellied / Sphyrapicus varius
- Scaup, Greater / Aythya marila
- Scaup, Lesser / Aythya affinis
- Schiffornis, Greenish / Schiffornis virescens
- Scimitarbill, Abyssinian / Rhinopomastus minor
- Scoter, Black / Melanitta americana
- Scoter, Surf / Melanitta perspicillata
- Scoter, White-winged / Melanitta deglandi
- Screamer, Horned / Anhima cornuta
- Scrubwren, Atherton / Sericornis keri
- Scrubwren, Large-billed / Sericornis magnirostra
- Scrubwren, White-browed / Sericornis frontalis
- Scythebill, Black-billed / Campylorhamphus falcularius
- Scythebill, Red-billed / Campylorhamphus trochilirostris
- Secretarybird / Sagittarius serpentarius
- Seedeater, Band-tailed / Catamenia analis
- Seedeater, Black-and-white / Sporophila luctuosa
- Seedeater, Buffy-fronted / Sporophila frontalis
- Seedeater, Chestnut-bellied / Sporophila castaneiventris
- Seedeater, Chestnut-throated / Sporophila telasco
- Seedeater, Double-collared / Sporophila caerulescens
- Seedeater, Drab / Sporophila simplex
- Seedeater, Morelet's / Sporophila morelleti
- Seedeater, Plain-colored / Catamenia inornata
- Seedeater, Reichenow's / Crithagra reichenowi
- Seedeater, Ruddy-breasted / Sporophila minuta
- Seedeater, Streaky / Crithagra striolata
- Seedeater, Variable / Sporophila corvina
- Seedeater, Yellow-bellied / Sporophila nigricollis
- Seedsnipe, Least / Thinocorus rumicivorus
- Seedsnipe, Rufous-bellied / Attagis gayi
- Seriema, Red-legged / Cariama cristata
- Serin, European / Serinus serinus
- Shama, White-rumped / Copsychus malabaricus
- Shelduck, Common / Tadorna tadorna
- Shelduck, Radjah / Radjah radjah
- Shikra / Accipiter badius sphenurus
- Shortwing, Himalayan / Brachypteryx cruralis
- Shoveler, Northern / Spatula clypeata
- Shrike, Bar-winged Flycatcher- / Hemipus picatus
- Shrike, Black-winged Flycatcher- / Hemipus hirundinaceus
- Shrike, Brown / Lanius cristatus
- Shrike, Burmese / Lanius collurioides
- Shrike, Gray-backed / Lanius tephronotus
- Shrike, Iberian Gray / Lanius meridionalis
- Shrike, Lesser Gray / Lanius minor
- Shrike, Loggerhead / Lanius ludovicianus
- Shrike, Long-tailed / Lanius schach bentet
- Shrike, Mackinnon's / Lanius mackinnoni
- Shrike, Masked / Lanius nubicus
- Shrike, Northern / Lanius borealis
- Shrike, Red-backed / Lanius collurio
- Shrike, Woodchat / Lanius senator
- Shrikethrush, Bower's / Colluricincla boweri
- Shrikethrush, Gray / Colluricincla harmonica
- Shrike-tit, Eastern / Falcunculus frontatus
- Sibia, Black-backed / Heterophasia melanoleuca
- Silverbill, Gray-headed / Spermestes griseicapilla
- Silverbird / Melaenornis semipartitus
- Siskin, Hooded / Spinus magellanicus
- Siskin, Olivaceous / Spinus olivaceus
- Siskin, Pine / Spinus pinus
- Siskin, Yellow-bellied / Spinus xantogastrus
- Sittella, Varied / Daphoenositta chrysoptera
- Skimmer, African / Rynchops flavirostris
- Skimmer, Black / Rynchops niger
- Skylark, Eurasian / Alauda arvensis
- Snipe, African / Gallinago nigripennis
- Snipe, Common / Gallinago gallinago
- Snipe, Giant / Gallinago undulata
- Snipe, Greater Painted- / Rostratula benghalensis
- Snipe, Pin-tailed / Gallinago stenura
- Snipe, Wilson's / Gallinago delicata
- Solitaire, Andean / Myadestes ralloides
- Solitaire, Black-faced / Myadestes melanops
- Solitaire, Townsend's / Myadestes townsendi
- Sora, / Porzana carolina
- Sparrow, American Tree / Spizelloides arborea
- Sparrow, Black-chinned / Spizella atrogularis
- Sparrow, Black-striped / Arremonops conirostris
- Sparrow, Black-throated / Amphispiza bilineata
- Sparrow, Brewer's / Spizella breweri
- Sparrow, Cassin's / Peucaea cassinii
- Sparrow, Chipping / Spizella passerina
- Sparrow, Clay-colored / Spizella pallida
- Sparrow, Eurasian Tree / Passer montanus
- Sparrow, Field / Spizella pusilla
- Sparrow, Fox / Passerella iliaca