I don't really know which neck of the woods you guys are from, but I can tell you that here in SW Pennsylvania, I would also include some other factors. We don't really have much in the line of coyotes, but we do have a whole heap of fox, raccoon, crows, vultures, housecats, domesticated dogs and 'possums.

It's not impossible that the bird died naturally and was eaten by a scavenging 'coon or random other critter.

With those hooks, it's obvious that he was getting old, and he may have actually been killed by another gobbler or died of natural causes.