Loud Rasping Hen Tone DiaphragmThe Knight and Hale HD Series Ol Yeller Mouth Call features a 2.5 reed Batwing Split V cut that produces loud yelps cuts and clucks with mature hen rasp. It transitions to softer purrs for close encounters and supports wide volume and cadence control for adapting to bird behavior. 2.5 reed Batwing Split V cut Loud raspy hen tone Produces yelps cuts and clucks Transitions to soft purrs Wide volume range control