so I came home today all excited to check on my girls, especially since one has gone broody and I was going to let her do all of the work and hatch and raise her chicks. well that excitement ended fast, I went down to the coop and 2 of my silkie hens were against the chicken wire inside the fully fenced in and covered run and their heads had been removed, my other hen was up in the coop dead and my rooster was laying next to coops ramp also dead. I'm guessing the last two died from a heart attack. my question is, what out there would only remove the heads of two of the chickens and not touch the other two or the eggs in the nest boxes??