Rocky Mountain Calls Yipper Yapper Coyote Howler combines a narrow-reed call and the Tone Tuner for a wide variety of coyote-tempting sounds. The Tone Tuner features an automatic Lip Positioner, so you get it right every time. Place your fingers over its holes for deeper sounds or remove your fingers for louder, high-pitched sounds. Authentic sounds include juvenile coyote barks and howls. It mimics baby jack rabbits and cottontails, distressed fawns and canines, and it can even give rodent squeaks. Effective as a coyote locator call. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Game Calls.