Versatile calls that reproduce a variety of close to mid range rodent screams or distress calls of wounded cottontails, jack rabbits and hares. You never have to worry about these calls locking up because they use ambient air. Simply compressing and expanding the bellow reproduces a variety of rodent squalls and screams useful for luring predators into range. The sound each call makes can be adjusted by the amount of back pressure used when you cup your hand over the sound chamber of the call.