Sand martin
Sanderling
Sandwich tern
Savi's warbler
Scarlet rosefinch
Scaup
Scottish crossbill
Sedge warbler
Serin
Shag
Shelduck
Shorelark
Short-eared owl
Short-toed treecreeper
Shoveler
Siskin
Skylark
Slavonian grebe
Smew
Snipe
Snow bunting
Song thrush
Sooty shearwater
Sparrow hawk
Spoonbill
Spotted crake
Spotted flycatcher
Spotted redshank
Starling
Stock dove
Stonechat
Stone-curlew
Storm petrel
Swallow
Swift