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.