- Sturnus melanopterus
- Sturnus nigricollis
- Sturnus pagodarum
- Sturnus philippensis
- Sturnus roseus
- Sturnus senex
- Sturnus sericeus
- Sturnus sinensis
- Sturnus sturninus
- Sturnus unicolor
- Sturnus vulgaris
- Styan's Bulbul
- Styan's Grasshopper-Warbler
- Styan's Grasshopper Warbler
- Styan's Warbler
- Stygian Owl
- Stymphalornis
- Stymphalornis acutirostris
- Subalpine Robin
- Subalpine Warbler
- Subantarctic Shearwater
- Subantarctic Skua
- Subantarctic Snipe
- Subdesert Brush-Warbler
- Subdesert Brush Warbler
- Subdesert Mesite
- Sublegatus
- Sublegatus arenarum
- Sublegatus modestus
- Sublegatus obscurior
- Subtropical Cacique
- Subtropical Doradito
- Subtropical Pygmy-Owl
- Subtropical Pygmy Owl
- Such's Antthrush
- Sucre Antpitta
- Sucunduri Flycatcher
- Sudan
- Sudan Babbler
- Sudan Brown Babbler
- Sudan Golden Sparrow
- Sudan Petronia
- Sudan Rock-Sparrow
- Sudan Rock Sparrow
- Sudest Butcherbird
- Sudest Honeyeater
- Sudest Meliphaga
- Suffolk
- Sugomel niger
- Sugomel nigrum
- Suiriri
- Suiriri Flycatcher
- Suiriri affinis
- Suiriri islerorum
- Suiriri suiriri
- Sukatschev's Laughingthrush
- Sula
- Sula Barn Owl
- Sula Cicadabird
- Sula Cuckoo-Dove
- Sula Cuckoo-shrike
- Sula Cuckoo Dove
- Sula Cuckooshrike
- Sula Dwarf-Kingfisher
- Sula Dwarf Kingfisher
- Sula Fruit-Dove
- Sula Fruit Dove
- Sula Golden-Bulbul
- Sula Golden Bulbul
- Sula Hanging-Parrot
- Sula Hanging Parrot
- Sula Island Masked-Owl
- Sula Island Masked Owl
- Sula Islands Cicadabird
- Sula King Myna
- Sula Magpie
- Sula Megapode
- Sula Myna
- Sula Pitta
- Sula Scops-Owl
- Sula Scops Owl
- Sula Scrubfowl
- Sula Starling
- Sula abbotti
- Sula dactylatra
- Sula dactylatra personata
- Sula granti
- Sula leucogaster
- Sula leucogaster plotus
- Sula nebouxii
- Sula nebouxii excisa
- Sula piscator
- Sula sula
- Sula sula rubripes
- Sula sula websteri
- Sula variegata
- Sulawesi
- Sulawesi Babbler
- Sulawesi Blue-Flycatcher
- Sulawesi Blue Flycatcher
- Sulawesi Brown Flycatcher
- Sulawesi Cicadabird
- Sulawesi Crested Goshawk
- Sulawesi Crested Myna
- Sulawesi Cuckoo
- Sulawesi Cuckoo-shrike
- Sulawesi Cuckooshrike
- Sulawesi Drongo
- Sulawesi Dwarf-Hornbill
- Sulawesi Dwarf-Kingfisher
- Sulawesi Dwarf Kingfisher
- Sulawesi Goshawk
- Sulawesi Ground-Dove
- Sulawesi Ground Dove
- Sulawesi Hanging-Parrot
- Sulawesi Hanging Parrot
- Sulawesi Hawk-Cuckoo
- Sulawesi Hawk-Eagle
- Sulawesi Hawk Cuckoo
- Sulawesi Hawk Eagle
- Sulawesi Honey-buzzard
- Sulawesi Honey Buzzard
- Sulawesi Honeyeater
- Sulawesi Hornbill
- Sulawesi King Starling
- Sulawesi Kingfisher
- Sulawesi Leaf-Warbler
- Sulawesi Leaf Warbler
- Sulawesi Magpie
- Sulawesi Malia
- Sulawesi Masked-Owl
- Sulawesi Masked Owl
- Sulawesi Mountain Whistler
- Sulawesi Myna
- Sulawesi Myzomela
- Sulawesi Nightjar
- Sulawesi Owl
- Sulawesi Pied Imperial Pigeon
- Sulawesi Pitta
- Sulawesi Pygmy Woodpecker
- Sulawesi Scops-Owl
- Sulawesi Scops Owl
- Sulawesi Serpent-Eagle
- Sulawesi Serpent Eagle
- Sulawesi Streaked Flycatcher
- Sulawesi Swiftlet
- Sulawesi Tarictic Hornbill
- Sulawesi Thrush
- Sulawesi Waterhen
- Sulawesi Whistler
- Sulawesi White-eye
- Sulawesi Woodcock
- Sulawesi Woodpecker
- Sulawesi Wrinkled Hornbill
- Sulidae
- Suliformes
- Sulphur-bearded Reedhaunter
- Sulphur-bearded Spinetail
- Sulphur-bellied Bulbul
- Sulphur-bellied Flycatcher
- Sulphur-bellied Neopelma
- Sulphur-bellied Tyrannulet
- Sulphur-bellied Tyrant-Manakin
- Sulphur-bellied Tyrant Manakin
- Sulphur-bellied Warbler
- Sulphur-bellied Whistler
- Sulphur-billed Nuthatch
- Sulphur-breasted Bush-Shrike
- Sulphur-breasted Bushshrike
- Sulphur-breasted Leaf Warbler
- Sulphur-breasted Myzomela
- Sulphur-breasted Parakeet
- Sulphur-breasted Toucan
- Sulphur-breasted Warbler
- Sulphur-crested Cockatoo
- Sulphur-rumped Flycatcher
- Sulphur-rumped Myiobius
- Sulphur-rumped Tanager
- Sulphur-throated Finch
- Sulphur-throated Spinetail
- Sulphur-vented Whistler
- Sulphur-winged Parakeet
- Sulphur White-eye
- Sulphury Flycatcher
- Sultan's Cuckoo-Dove
- Sultan's Cuckoo Dove
- Sultan Tit
- Sultanpur Bird Sanctuary
- Sultanpur Jheel
- Sultanpur National Park
- Sulu Bleeding-heart
- Sulu Boobook
- Sulu Hawk-Owl
- Sulu Hawk Owl
- Sulu Hornbill
- Sulu Pitta
- Sulu Pygmy Woodpecker
- Sulu Woodpecker
- Sumatra
- Sumatran Babbler
- Sumatran Cochoa
- Sumatran Crested Jay
- Sumatran Drongo
- Sumatran Flowerpecker
- Sumatran Frogmouth
- Sumatran Green-Pigeon
- Sumatran Green Pigeon
- Sumatran Ground-Cuckoo
- Sumatran Ground Cuckoo
- Sumatran Hill-Partridge
- Sumatran Hill Partridge
- Sumatran Large Wren-Babbler
- Sumatran Large Wren Babbler
- Sumatran Laughingthrush
- Sumatran Leafbird
- Sumatran Partridge
- Sumatran Pheasant
- Sumatran Treepie
- Sumatran Trogon
- Sumatran Whistling-Thrush
- Sumatran Whistling Thrush
- Sumatran Woodpecker
- Sumatran Wren-Babbler
- Sumatran Wren Babbler
- Sumava National Park
- Sumava National Park Czech Republic
- Sumba
- Sumba Boobook
- Sumba Brown Flycatcher
- Sumba Buttonquail
- Sumba Cicadabird
- Sumba Cuckoo-shrike
- Sumba Cuckooshrike
- Sumba Flycatcher
- Sumba Green-Pigeon
- Sumba Green Pigeon
- Sumba Honeyeater
- Sumba Hornbill
- Sumba Myzomela
- Sumba Wreathed Hornbill
- Sumbawa
- Sumburgh Head
- Sumburgh Head Shetland Islands
- Sumburgh Head Shetland Islands, Scotland
- Sumichrast's Scrub-Jay
- Sumichrast's Scrub Jay
- Sumichrast's Wren
- Summer Tanager
- Sun Lark
- Sun Parakeet
- Sunbird Asity
- Sunbirds
- Sunbittern
- Sunda Blue Flycatcher
- Sunda Blue Robin
- Sunda Bulbul
- Sunda Bush-Warbler
- Sunda Bush Warbler
- Sunda Coucal
- Sunda Cuckoo
- Sunda Cuckoo-shrike
- Sunda Cuckooshrike
- Sunda Forktail
- Sunda Frogmouth
- Sunda Ground-Cuckoo
- Sunda Ground Cuckoo
- Sunda Ground Thrush
- Sunda Honeyeater
- Sunda Lapwing
- Sunda Laughing-thrush
- Sunda Laughingthrush
- Sunda Minivet
- Sunda Pied Hornbill
- Sunda Pygmy Woodpecker
- Sunda Robin
- Sunda Scops-Owl
- Sunda Scops Owl
- Sunda Swiftlet
- Sunda Teal
- Sunda Thrush
- Sunda Treepie
- Sunda Warbler
- Sunda Whistler
- Sunda Whistling-Thrush
- Sunda Whistling Thrush
- Sunda Woodpecker
- Sunda Wrinkled Hornbill
- Sundan Frogmouth
- Sundevall's Piculet
- Sungrebe
- Suno Antwren
- Sunset Lorikeet
- Superb Bird-of-Paradise
- Superb Bird-of-paradise
- Superb Bird of Paradise
- Superb Fairy-wren
- Superb Fairywren
- Superb Fruit-Dove
- Superb Fruit Dove
- Superb Lyrebird
- Superb Parrot
- Superb Pitta
- Superb Starling
- Superb Sunbird
- Superciliaried Hemispingus
- Superciliaried Tanager
- Superciliated Hemispingus
- Superciliated Wren
- Supercillied Hemispingus
- Supple-tailed Glossy-Starling
- Supple-tailed Glossy Starling
- Surf Cinclodes
- Surf Scoter
- Surfbird
- Suriname
- Surlingham Church Marsh
- Surlingham Church Marsh RSPB Reserve
- Surnia
- Surnia ulula
- Surniculus
- Surniculus dicruroides
- Surniculus lugubris
- Surniculus musschenbroeki
- Surniculus velutinus
- Surrey
- Surucua Trogon
- Sussex
- Sutherland
- Suthora
- Suthora beaulieui
- Suthora fulvifrons
- Suthora humii
- Suthora nipalensis
- Suthora poliotis
- Suthora ripponi
- Suthora verreauxi
- Svalbard
- Svalbard (Spitzbergen)
- Svalbard (Spitzbergen) Norway
- Swahili Sparrow
- Swainson's Flycatcher
- Swainson's Francolin
- Swainson's Hawk
- Swainson's Sparrow
- Swainson's Spurfowl


