Specially developed to imitate bird distress sounds. These sounds are very effective to call foxes and other predators with. To imitate a woodpecker in distress, blow short and intense thrusts of air or hard trrr, trrr, trrr into the call. To make distress sounds of small birds, blow carefully and let the air go both out and in through the call. If you blow a short steady flow of air through the call you will get a very realisticl rabbit distress sound.Call 15-30 seconds and sit quiet for 1-2 minutes and repeat for 15-25 minutes / stand.