Phelps Young'n Calf Reed Elk Call - Calf Calls have always been a part of elk communication, but not many hunters realize just how effective it can be while hunting. This one-piece external calf call was designed specifically to produce the high-pitched call of a calf with little effort. The Young'n is a small one-piece call. It features a thin mylar reed and specifically sized exhaust orifice to make perfect calf calls every time.