Please help identify this predator

[lagrange chicks]

Whatever it is did come back and all but one hen are now gone. The sun was hardly up when we got out there this morning, so whatever it was was waiting for them.

None had heads, one body was down to just the bones, one was intact and the others had their bowels around the yard. It was a massacre.

We are going to try and find a safer home for our one remaining girl. It's too cold and now dangerous for her to be alone.

This has already been such an intense and stressful week for our family, but this just hurts so much. My poor kids are heartbroken and I feel so helpless.

So sorry, that's a tough one to loose all but one.