Australian Bullroarer Aboriginal Australia Bull Roarer Bullroarer is native to both Australian Aboriginal and American Indian tribes Also known as the howler, bullroarer, rhombus, or turndun Bullroarer measures 30" overall length including cord, wood aerofoil measures apx 7 1/2" Bull Roarer Australian Aboriginal Bullroarer Howler demonstrates the doppler effect Australian Aboriginal bull roarer will make a howling noise that will seem to change pitch to those standing far enough away