Spotted Woodcreeper 
Squamate antbird 
Square-tailed bulbul 
Square-tailed drongo 
Sri Lanka blue magpie 
Sri Lanka drongo 
Sri Lanka hill myna 
Sri Lanka scimitar babbler 
Sri Lanka swallow 
Sri Lanka thrush 
Sri Lanka whistling thrush 
Sri Lanka woodshrike 
Sri Lankan white-eye 
Standardwing bird-of-paradise 
Star Finch 
Star-chested treerunner 
Stark's lark 
Steel-blue whydah 
Steere's liocichla 
Stellers jay 
Stitchbird 
Stout cisticola 
Stout-billed cinclodes 
Straight-billed woodcreeper