Yelps are an important call for turkey hunters to produce, but it can be tough to get them right with diaphragm or box calls. The Thunder Yelper® takes care of that with an easy-to-use hybrid design. Whether you're a beginner or an expert, you'll be able to blow deadly accurate yelps through the double-sided sound chambers. Easily adjust volume for soft or loud yelps depending on your situation. This is a great option for close- to mid-range calling when you've got a turkey listening who needs a few nudges.