My son found her first thing in the morning a couple of feet outside the chicken door which he locks up every night.  She was not there when he locked them up, and she was before he fed them which is before he lets them out.  We are in Timber Oregon which is pretty much in the middle of nowhere but it is a small community (not even a town).  We are by the river we have eagle, hawk, cougar, coyote, raccoon, skunk, and whatever else.  No wolves or opossum.  We are at about 1000 ft.  This henny has no insides except what I believe is her gizzard which is still attached and skin, bones and feathers.  There does not appear to be any flesh either.  Like I said, it appears her skin is sucked up to her bones on her head and neck.  Her body cavity is opened from the front, and the breast bone is really the only thing that looks to be broken out of place (probably to get to the insides).
Thank you for the responses.
By the way, my chickens free range in a very large pen every day and it is not covered and we have only lost a couple of chickens in three years (most of the chickens we have lost have been due to lice before we knew about that and extreme heat, extreme cold and the new puppy.  The two we lost were when we got home late one night therefore they were locked up to late.  Free range can be done, and the GSD can be trained after killing.
Again thank you I will look forward to more response tonight hopefully.