I have a flock of standard size assorted chickens and last spring added four silkie chicks. They free range during the day and are closed in a coop at night. Our entire property is surrounded by high tensil electric fencing and we have never lost a chicken since we put our fence up two years ago. My young boys and I adore the silkies, they are so very sweet. We hold and love on them all the time. So, I was heartbroken to find 2 of my silkies dead in the yard after I came back from running errands today. Both with their heads nearly ripped off. The other two were hiding, but were fine. I came back out about 1 1/2 hours later to shut the coop for the night and found one of the surviving two dead with similiar wounds, plus it looked as if part of the breast was eaten. This was during the day within the course of a few hours. Any ideas as to what type of predator I'm dealing with? Thank you in advance for any advice.