Wood Sandpiper

It looks like a longer-legged, more delicate green sandpiper. with a shorter, finer bill, a brown back, longer yellowish legs and a smaller, less contrasting white rump patch. Its closest relatives are the common redshank and the marsh sandpiper, and it has no subspecies (Wikipedia, general species account). The species is a small wader belonging to the sandpiper family Scolopacidae. A Eurasian species, it is the smallest of the shanks, a genus of mid-sized, long-legged waders that largely inhabit freshwater and wetland environments, as opposed to the maritime or coastal habitats of other, similar species. (Wikipedia, general species account).

Wood Sandpiper is the smallest of the shanks, a group of mid-sized, long-legged waders that largely use freshwater and wetlands. These three species are a group of smallish shanks with red or yellowish legs, displaying a breeding plumage of subdued, light-brown above (with some darker mottling), and a pattern of somewhat smaller, diffuse, brownish spots on the breast and neck. This species is usually found in and around freshwater habitats during migration and wintering. (Wikipedia, general species account).