Rufous-vented chachalaca 
Rusty-margined guan 
Sage Grouse 
Salvadoris Pheasant 
Sand partridge 
Satyr Tragopan 
Scaled chachalaca 
Scaly spurfowl 
Scaly-breasted Partridge 
See-see partridge 
Sharp-tailed grouse 
Siamese Fireback 
Sickle-winged guan 
Silver Pheasant 
Singing quail 
Sooty Grouse 
Speckled chachalaca 
Spix's guan 
Spotted wood quail 
Spruce Grouse 
Sri Lanka spurfowl 
Sri Lankan Junglefowl 
Starred wood quail 
Stone partridge