The Green Sandpiper, Tringa ochropus, is a small wader, or shorebird, with a somewhat plump appearance. It boasts a dark greenish-brown back and wings, complemented by a greyish head and breast. The underparts are predominantly white, with the back featuring white spots that vary in extent depending on the season and age of the bird. The legs and short bill are a matching dark green, creating a harmonious color palette for this avian species.
When observing the Green Sandpiper, look for its distinctive flight pattern, which reveals dark wings above and below, punctuated by a striking white rump. This feature is a reliable identifier, setting it apart from its close relative, the slightly smaller Solitary Sandpiper of North America. Additionally, the Green Sandpiper's white-spotted back is most pronounced in breeding adults and less so in winter and juvenile plumage.