Scaly-breasted Hummingbird
Scarlet Macaw
Scarlet Tanager
Scissor-tailed Flycatcher
Scrub Euphonia
Semipalmated Plover
Sharp-shinned Hawk
Silver-throated Tanager
Slaty Flowerpiercer
Smooth-billed Ani
Snow Bunting
Snow Goose
Snowy Egret
Social Flycatcher
Solitary Sandpiper