Snowy-browed Flycatcher 
Snowy-crowned robin-chat 
Snowy-throated kingbird 
Sociable weaver 
Social flycatcher 
Society Finch 
Solitary black cacique 
Somali bunting 
Somali crow 
Somali fiscal 
Somali short-toed lark 
Sombre Greenbul 
Song Sparrow 
Song Thrush 
Song wren 
Sooty ant tanager 
Sooty antbird 
Sooty chat 
Sooty thrush 
Sooty-capped babbler 
Sooty-capped bush tanager 
Sooty-headed Bulbul 
Sooty-headed tyrannulet 
Souimanga sunbird