The Wing Bone Yelper was probably one of the first turkey calls used by Native American Indians to call turkeys. The Wing Bone Yelper consisted of the three bones of a turkey's wing, but we have perfected the call with modern technology. There is no doubt, for those who master this call; it becomes one of their secret weapons. We can think of many a hard-to-kill gobbler that could not resist a wing bone. You'll have fun with this one.