The Common Greenshank (Tringa nebularia) is a wader in the large family Scolopacidae, the typical waders. Its closest relative is the Greater Yellowlegs, together with which and the Spotted Redshank it forms a close-knit group. Among them, these three species show all the basic leg and foot colours found in the shanks,

This is a subarctic bird, breeding from northern Scotland eastwards across northern Europe and Asia. It is a migratory species, wintering in Africa, the Indian Subcontinent, and Australasia, usually on fresh water. It breeds on dry ground near marshy areas, laying about four eggs in a ground scrape.

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It is a widespread breeding bird across temperate Eurasia. It is a migratory species, wintering on coasts around the Mediterranean, on the Atlantic coast of Europe from Great Britain southwards, and in South Asia. They are uncommon vagrants outside these areas; on Palau in Micronesia for example, the species was recorded in the mid-1970s and in 2000.

They are wary and noisy birds which will alert everything else with their loud piping call.

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The Spotted Redshank, Tringa erythropus, is a wader (shorebird) in the large bird family Scolopacidae. It breeds across northern Scandinavia and northern Asia and migrates south to the Mediterranean, the southern British Isles, France, tropical Africa, and tropical Asia for the winter. It is an occasional vagrant to Australia and North America

The Spotted Redshank breeds in the Arctic across much of Eurasia, from Lapland in the west to Chukotskaya in the east.

More information can be found on Wikipedia.