Really,,, Who figured that out?
I picture an early Native American who was lucky enough to take a bird. After cooking over the fire, the klan starts tearing into the bird as all are very hungry. Of course the wings being smaller parts,, they are passed to the young ones of the klan. After eating all that is edible, they start in on desert,,, the bone marrow of the bird. Dad tells the little ones,, break the bones open and suck on it to get out the marrow. The young'ns are franticly sucking on the wing bone until it made the sound,,, yelp.... Dad say's, give me that bone it sounded just like the bird before I sent an arrow through him. The wingbone call was born!
Thats my theory and I'm sticking to it!!!!