Sabine's Gull
Sabine's Snipe
Sanderling
Sand Grouse
Sand Martin
Sandpiper
Sandwich Tern
Savi's Warbler
Scarlet Bullfinch
Scaup
Schinzs Sandpiper
Scops Eared Owl
Scoter
Sedge Warbler
Serin Finch
Shearwater
Shelduck
Shore Lark