Bits and Pieces - Motion Sensor Duck - Weather Resistant, Hand Painted Life-size Polyresin Sculpture - Will Quack At Passersby Our motion sensor duck quacks and rotates his head enthusiastically every time someone walks by. Sculpted of polyresin. Hand painted with such realistic detail your guests will think he's real! Measures 6" x 13-1/2" x 6-3/4". Runs on 3 AA batteries, not included.