sandpiper

The Scolopacidae are a large family of waders, (known as shorebirds in North America). Many of the smaller species are often called "sandpipers", especially members of genera Calidris, Tringa and Actitis. Other well-known groups include curlews and snipes. The majority of species eat small invertebrates picked out of the mud or soil. Different lengths of bills enable different species to feed in the same habitat, particularly on the coast, without direct competition for food.

The early fossil record of sandpiper is very bad for a group that was probably present at the non-avian dinosaur's extinction. "Totanus" teruelensis (Late Miocene of Los Mansuetos (Spain) is sometimes considered a scolopacid - maybe a shank - but may well be a larid; little is known of it.

Paractitis has been named from the Early Oligocene of Sasketchewan (Canada). Most living genera would seem to have evolved throughout the Oligocene to Miocene with the waders perhaps a bit later; see the genus accounts for the fossil record.