The sanderling, by its scientific name Calidris alba, is a shorebird (which lives in mud) that lives around the world.

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It is part of the Scolopacidae family, and of the order Charadriiformes.

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It is recognizable by its brown, black, gray, orange head and back and white belly (this is its breeding plumage) or gray and white head and back and white belly (this is its winter plumage). Its beak and legs are black.

In the sanderling, it is impossible to recognize the male from the female.

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It feeds mainly on crustaceans, worms and insects.

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The sanderling inhabits estuaries and bays.

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It nests on the ground. It lays 3 to 4 eggs . Sometimes there may be a second clutch in the year.

It is a fairly silent species.

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On the IUCN conservation status it is: LC Least concern.