- Socotra Sunbird
- Socotra Warbler
- Sodviken (Oland)
- Sodviken (Öland)
- Soft-plumaged Petrel
- Soguksu National Park
- Soguksu National Park (Soguksu Milli Parki) Turkey
- Sokoke Pipit
- Sokoke Scops-Owl
- Sokoke Scops Owl
- Solander's Petrel
- Soleseat lock, Castle Kennedy (Dumfries and Galloway)
- Solid-billed Hornbill
- Solitary Black Cacique
- Solitary Cacique
- Solitary Eagle
- Solitary Sandpiper
- Solitary Snipe
- Solitary Tinamou
- Sologne
- Sologne France
- Solomon Corella
- Solomon Crow
- Solomon Cuckoo-shrike
- Solomon Fish-Eagle
- Solomon Fish Eagle
- Solomon Flycatcher
- Solomon Grey-throated White-eye
- Solomon Hawk-Owl
- Solomon Hawk Owl
- Solomon Islands
- Solomon Islands Boobook
- Solomon Islands Cicadabird
- Solomon Islands Corella
- Solomon Islands Crow
- Solomon Islands Cuckoo-shrike
- Solomon Islands Cuckooshrike
- Solomon Islands Fish-Eagle
- Solomon Islands Fish Eagle
- Solomon Islands Frogmouth
- Solomon Islands Hawk-Owl
- Solomon Islands Hawk Owl
- Solomon Islands Sea-Eagle
- Solomon Islands Sea Eagle
- Solomon Islands White-eye
- Solomon Mountain Whistler
- Solomon Sea-Eagle
- Solomon Sea Eagle
- Solomon Whistler
- Solomon White-eye
- Solomon Yellow-throated White-eye
- Solomons
- Solomons Boobook
- Solomons Cockatoo
- Solomons Crow
- Solomons Cuckooshrike
- Solomons Frogmouth
- Solomons Myiagra Flycatcher
- Solomons Nightjar
- Solomons Pitta
- Solomons Satin Flycatcher
- Solomons White-eye
- Somali Bee-eater
- Somali Black-throated Bustard
- Somali Boubou
- Somali Bulbul
- Somali Bunting
- Somali Bushlark
- Somali Bushshrike
- Somali Chanting-Goshawk
- Somali Chanting Goshawk
- Somali Chestnut-winged Starling
- Somali Courser
- Somali Crombec
- Somali Crow
- Somali Fiscal
- Somali Golden-breasted Bunting
- Somali Golden-winged Grosbeak
- Somali Grosbeak
- Somali Lark
- Somali Long-billed Lark
- Somali Ostrich
- Somali Pigeon
- Somali Raven
- Somali Red-winged Starling
- Somali Rock-Pigeon
- Somali Rock Pigeon
- Somali Short-toed Lark
- Somali Sparrow
- Somali Starling
- Somali Stock-Dove
- Somali Stock Dove
- Somali Thrush
- Somali Tit
- Somali Wheatear
- Somalia
- Somateria
- Somateria Mollissima
- Somateria fischeri
- Somateria mollissima
- Somateria mollissima borealis
- Somateria spectabilis
- Sombre Bulbul
- Sombre Chat
- Sombre Greenbul
- Sombre Hummingbird
- Sombre Kingfisher
- Sombre Leaf-Warbler
- Sombre Leaf Warbler
- Sombre Nightjar
- Sombre Pigeon
- Sombre Rock Chat
- Sombre Rockchat
- Sombre Tit
- Somerset
- Somme Estuary
- Somme Estuary France
- Sompio Natural Park and surrounding area
- Sompio Natural Park and surrounding area Finland
- Son Bou
- Son Bou Menorca, Balearic Islands, Spain
- Son Parc
- Son Parc Menorca, Balearic Islands, Spain
- Song Parrot
- Song Sparrow
- Song Thrush
- Song Wren
- Songar Tit
- Sonora
- Sooretama Slaty-Antshrike
- Sooretama Slaty Antshrike
- Sooty-capped Babbler
- Sooty-capped Bush-Tanager
- Sooty-capped Bush Tanager
- Sooty-capped Chlorospingus
- Sooty-capped Hermit
- Sooty-capped Puffbird
- Sooty-capped Tanager Finch
- Sooty-capped Tree-Babbler
- Sooty-capped Tree Babbler
- Sooty-crowned Flycatcher
- Sooty-faced Brush-Finch
- Sooty-faced Brush Finch
- Sooty-faced Finch
- Sooty-fronted Spinetail
- Sooty-headed Babbler
- Sooty-headed Bulbul
- Sooty-headed Plain Babbler
- Sooty-headed Tyrannulet
- Sooty-headed Wren
- Sooty Albatross
- Sooty Ant-Tanager
- Sooty Ant Tanager
- Sooty Antbird
- Sooty Babbler
- Sooty Barbet
- Sooty Barbthroat
- Sooty Boubou
- Sooty Brush-Finch
- Sooty Brush Finch
- Sooty Brushfinch
- Sooty Bushtit
- Sooty Chat
- Sooty Crake
- Sooty Crow-Shrike
- Sooty Currawong
- Sooty Falcon
- Sooty Flycatcher
- Sooty Fox-Sparrow
- Sooty Fox Sparrow
- Sooty Grassquit
- Sooty Grouse
- Sooty Gull
- Sooty Honeyeater
- Sooty Jay
- Sooty Long-tailed Tit
- Sooty Melidectes
- Sooty Mollymawk
- Sooty Munia
- Sooty Myzomela
- Sooty Owl
- Sooty Oystercatcher
- Sooty Robin
- Sooty Shearwater
- Sooty Shrike-thrush
- Sooty Shrike Thrush
- Sooty Shrikethrush
- Sooty Swift
- Sooty Tern
- Sooty Thicket-Fantail
- Sooty Thicket Fantail
- Sooty Thrush
- Sooty Tit
- Sooty Tyrannulet
- Sooty Whistler
- Sooty Woodpecker
- Sora
- Sora Crake
- Sorella
- Sorella eminibey
- Sorsogon Wren-Babbler
- Sorsogon Wren Babbler
- Souimanga Sunbird
- Soulie's Barwing
- Soulseat Loch
- Sousa's Shrike
- South-East (Öland)
- South-East Oland
- South-western Shrike-thrush
- South-western Shrike Thrush
- South Africa
- South African Cliff-Swallow
- South African Petronia
- South African Rock-Sparrow
- South African Rock Sparrow
- South African Shelduck
- South African Swallow
- South America
- South American Painted-snipe
- South American Painted Snipe
- South American Snipe
- South American Stilt
- South American Tern
- South Australia
- South Boston
- South Boston(Boston)
- South Carolina
- South Dakota
- South Georgia
- South Georgia Diving-Petrel
- South Georgia Diving Petrel
- South Georgia Gallinule
- South Georgia Islands
- South Georgia Pipit
- South Georgia Shag
- South Indian Black Drongo
- South Island Adzebill
- South Island Kokako
- South Island Oystercatcher
- South Island Pied Oystercatcher
- South Island Pio-pio
- South Island Piopio
- South Island Robin
- South Island Rock Wren
- South Island Saddleback
- South Island Snipe
- South Island Takahe
- South Island Wren
- South Korea
- South Melanesian Cuckooshrike
- South Moluccan Pitta
- South Pare White-eye
- South Philippines Scops-Owl
- South Philippines Scops Owl
- South Polar Skua
- South Stack Cliffs
- South Stack Cliffs RSPB Reserve Wales
- South Sudan
- South Uist
- South Windsor
- South african cliff swallow
- South island Kaka
- Southern Anteater-Chat
- Southern Anteater Chat
- Southern Antpipit
- Southern Bald Ibis
- Southern Banded Snake-Eagle
- Southern Banded Snake Eagle
- Southern Barred Woodcreeper
- Southern Beardless-Tyrannulet
- Southern Beardless Tyrannulet
- Southern Bentbill
- Southern Black-Flycatcher
- Southern Black-Tit
- Southern Black-headed Munia
- Southern Black Flycatcher
- Southern Black Korhaan
- Southern Black Tit
- Southern Blue-eared Glossy-Starling
- Southern Blue-eared Glossy Starling
- Southern Boobook
- Southern Boobook Owl
- Southern Boubou
- Southern Bristle-Tyrant
- Southern Bristle Tyrant
- Southern Brown-throated Weaver
- Southern Brown Kiwi
- Southern Caracara
- Southern Carmine Bee-eater
- Southern Cassowary
- Southern Chestnut-tailed Antbird
- Southern Citril
- Southern Cordonbleu
- Southern Coucal
- Southern Crested-Caracara
- Southern Crested Caracara
- Southern Crested Coua
- Southern Crested Madagascar Coucal
- Southern Crowned-Pigeon
- Southern Crowned Chat-Tyrant
- Southern Crowned Chat Tyrant
- Southern Crowned Pigeon
- Southern Double-collared Sunbird
- Southern Emerald-Toucanet
- Southern Emerald Toucanet
- Southern Emu-wren
- Southern Emuwren
- Southern Figbird
- Southern Fiscal
- Southern Fulmar
- Southern Giant-Petrel
- Southern Giant Petrel
- Southern Golden Bulbul
- Southern Gray-headed Sparrow
- Southern Gray Shrike
- Southern Green Jery
- Southern Grey-headed Sparrow
- Southern Grey Shrike
- Southern Grosbeak-Canary
- Southern Ground-Hornbill
- Southern Ground Hornbill
- Southern Hill Myna
- Southern Honeyeater
- Southern House Wren
- Southern Hyliota
- Southern Island Saddleback
- Southern Lapwing
- Southern Little Shearwater
- Southern Logrunner
- Southern Marquesan Reed-Warbler
- Southern Marquesan Reed Warbler
- Southern Martin
- Southern Masked-Weaver
- Southern Masked Weaver
- Southern Mealy Amazon
- Southern Moluccas
- Southern Mountain Cacique
- Southern Mountain Greenbul
- Southern Nightingale-Wren
- Southern Nightingale Wren
- Southern Penduline-Tit
- Southern Penduline Tit
- Southern Pied-Babbler
- Southern Pied Babbler
- Southern Pied Hornbill


