ground and flush when disturbed; some scratch noisily in leaves.
STORM-PETRELS: Blackish or gray sparrow to robin-sized seabirds; tail squared, shallow forked, or wedge-shaped; some have white rump. Flight swallowlike; hover at water surface to feed.
•SWALLOWS: Highly aerial sparrow to robin-sized birds with long, narrow, pointed wings and very small bill. Flight graceful, erratic, and buoyant.
SWANS: Very large, long-necked white waterfowl with long, gooselike bills. Swim and feed at surface, often tipping up. Fly in formation with slow wingbeats, neck extended.
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SHEARWATERS: Seabirds with long, narrow, pointed wings and short, fan-shaped tails. Flap and coast in stiff-winged flight, often in bunches; swim and feed at surface.
SHOREBIRDS: A varied group of birds usually seen on or near water; they have long, narrow, pointed wings; larger species have long necks; bill usually short and slender, but in some downcurved, upcurved, or long and straight. Walk or run, and often wade; a few bob head or tail; fly with rapid wingbeats, often in bunches or formations, with simultaneous banking. A few species live chiefly on land.
•SHRIKES: Large-headed, predatory birds with horizontal posture and stout, hooked bill; gray with black mask. Swoop up to perch when landing.
•SPARROWS: Brown-streaked birds with short, conical bills. Skulk in vegitation; forage on
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