Hinterland Whos Who The Willow Ptarmigan. Word Search Puzzle Solver. Hinterland Whos Who The Willow Ptarmigan word Search Puzzle Game. Find words related to movie actors, actresses, and genres. Word Search Puzzle Solver. This very short documentary from the Hinterland Who’s Who series introduces you to the willow ptarmigan. This includes identifying and searching for words that are related to : John Livingston .