Too gruesome for Halloween

Getting gas yesterday, I noticed this on the ground. At first I thought it was road kill but as I got closer I thought it might be a Halloween decoration. However, close up, it was certainly real and a bit too macabre to sell at the Shoppers Drug Mart. My theory is that it was being eaten by a single bird (hawk, falcon, crow?) since a cat ravages it more and multiple birds would result in the alpha bird forcing the others away from the central good parts so that the wings would also be eaten. The bird must have been chased off before completion.