Verminator calls are one of the newst calls on the market. The "Syco Tweety" features a unique bifurcated open reed that is custom tuned to perfection. Ear piercing pitch, irresistable sound & freeze proof. Design allows the hunter to vary the pitch. The "Syco Tweety" is ear piercing, high pitch, irresistable to all predators. Awesome on bobcats!