Ihave herd it one time in 3 years turkey hunting. jumped the bird walking into woods about 1030 in the morning watched him fly up then down.Worked the bird for 45 minutes had him comeing in to my right herd the sound you wont forget it.Bad thing is went to call one more time and their was two coyotes right be hind me that snuck up on me and saw the bird and tried to have it for breakfast.God thing the bird was able to fly in time bad thing i never saw the bird agin.