Cats do make it a habit to burry their leftovers for another day.  I strongly suspect that the turkey was killed in another location and then brought to where you found it.  After decades of peace between the bobcats and myself I have relocated 2 of them in the last 4 years.  One to my son in law's wall and the other to a friend's mantle. 
Don't sell the bobcat short, he or she is a fearsome predator.
Another friend of mine was a state game warden.  Despite spending his whole carrier rubbing shoulders with wildlife he once told me that he only had about 5 minutes of bobcat viewing.  I don't think that they are that rare but I do think that they are very warry and secretive.  BTW, bobcats are a 24-7 predator.