
Photo: Tero Linjama · CC0 1.0
Tringa ochropus
Green Sandpiper is a small Old World wader and an ancient lineage of its genus, whose only close living relative is the solitary sandpiper. It is a somewhat plump bird with a dark greenish-brown back and wings, a greyish head and breast and white underparts, and dark green legs and bill. In flight its dark wings and brilliant white rump are characteristic (Wikipedia, general species account). The back is spotted white, most strongly in breeding adults. (Wikipedia, general species account).
Both nest in trees, unlike most sandpipers. In addition, both species nest in trees, unlike most other scolopacids. Food is small invertebrate items picked off the mud as this species works steadily around the edges of its chosen pond. The species is very much a bird of freshwater, and is often found in sites too restricted for other waders, which tend to like a clear all-round view. It lays 2–4 eggs in an old tree nest of another species, such as a fieldfare (Turdus pilaris). (Wikipedia, general species account).