The feather centres indicate this to be an adult bird in non-breeding plumage. They should be completely dark on a juvenile bird but I am happy to receive suggestions about this.
Country: UK
Location: Dungeness RSPB Reserve
Family: Sandpipers, Snipes (Scolopacidae)
Species: Ruff (Philomachus pugnax)
Date taken: 03/09/2013