So I have been slowly losing the battle to predation. My 100% free range ladies have dwindled. We have seen a big fox around. We lost our big duck first. Then 2 weeks later we lost 2 hens. Then we began using the fox detergent system which is a loud radio. This system worked great. We lost nothing with the radio on. But we only let the ladies out once I. A great while when we were home. Today my wife let them out and didn't turn on the radio. When I came home I let my dog out. And he ran right under the shed near the coop and barked his head off. He had something cornered. I got a 2x4 and called him out and started to come around. I heard a deep growl. Then I rammed the 2x4 under and hit a hard bodied animal that took off out the back. Never saw it. The 2x4 has a big scratch in it. I've seen big cat prints in the snow before so I know they are around. Which does this sound like. We are missing two more hens. Tomorrow the two wire electric fence goes up.