Ruff - Boundary Bay, BC
These sandpipers aren't much different than our larger sandpipers in the fall but the sure can do a molt well. See pictures of the breeding plumage here. This bird is not a common visitor to our coast on the fall as they are a Eurasian species that winters on the northern coast and winters mostly in Africa. This particular fellow was found on Boundary bay feeding in the shallows. These birds have an interesting mating ritual which is somewhat explained here