When is a shank not a redshank? when its a common green shank, seen here, landing in the shallow water of the mudflats where it likes to feed.
And a big thank you to Mike K. for helping educate me about shanks and other birds.
As its name suggests, the Common Greenshank has yellowish green legs (not to say shanks), but often this colour is not easily seen as the legs are usually covered with mud when the bird feeds on intertidal mudflats, like here in Mai Po.
The major differences between Common Greenshank and other sandpipers are its larger body and thick, slightly up-curved beak.