i have been making turkey calls for a few years now, most of them box calls, made a few wing bone calls also.from what ive read on turkey call forums about wingbone calls is that wild turkey bones are larger and the walls are thicker than domestic birds. you can use either, but they prefer wild.boil in dish soap to loosen the meat up, scrape off with knife , run pipe cleaner thru to clean insides.can soak over nite in peroxide to whiten bones,not bleach that weakens them. or you can soak in strong tea or coffee to get a patina on them .the hen bones sound more like a hen and a gobblers bones sound more like a gobbler. due to the size of hole in mouth piece. most of the guys like hen or jakes because they are spring hunting,if you are trying to regroup afall gobbler flock use one out of gobbler bones .you can also mix bones up, say, using a gobbler bone for the bell,to get more sound, it will flare out more. dry fit the bones first to get the sound you are looking for, mark the bones cut so that about a 1/2" or less is inside of the joining bone. after dry, fill in any gaps to get a air tight seal with wood dough or wall filler or plaster. after dry wrap with what ever, sinew or thread. if the hole is to large in the mouth piece. you can also fill in the mouth piece hole with epoxy glue, and drill out with small bit when dry, smaller hole is easier to run, it is also easier to run with a lip stop on the mouth piece. a small rubber washer can be used , but to be correct, one can be made out of antler, thick leather, or an old button