I am thinking you are wanting a reply in regards to where to aim if you were bowhunting and I this is where I would aim if I wasn't using a guillotine type broadhead. (I may be way off, I am still new to bowhunting and am still trying to figure this out as well)
Well not to argue but hunter211's dot is right on the drum sticks which will undoubtedly drop the bird but the actual vitals sit right inder the spine close to where to wing bone connects to the body.......