I had 27 chickens just 2 monthes ago and now I'm down to 20. By the time I had lost 3 chickens, my neighbor lost 5-6 that same week. He found out his problem was a hawk, but for several weeks I had my chickens locked up (got a lavender orpington from the neighbors so I had to integrate him carefully) and that's when I lost 5 chickens. Only lost 1 rooster to this mystery but 7 hens got got too. No signs except for one when I had them let loose, but that was the hawk. Every other mystery happened at night in my coop. The only ways it could get in is through holes for a dog pen about 2x2 inches or less, the neton the roof, or by digging. There has been no digging outside my coop, the net has no holes in it or other entrances through that, and there's no blood, feathers, bodies, any signs of anybody disappearing. If you didn't know any better about the amount you had and counted them regularly, you'd think nothing of it and go on with your day. No signs whatso ever and I can't stress that enough. If they got the chicken out through the holes I mentioned, it'd skin them alive and maybe rip the wings off. No possible way they could fit without it. No way through the roof, however at the start I thought it was a hawk or raccoons because I had a hole but I fixed it better than ever. It's kentucky here, they're disappearing at night. My last thread on this thought coyotes, a owl *but the owl would have to be big enough to pick up jersey giants, the first rooster I got was 15 pounds, thing wore me out like a rag doll*, hawks, or people. My dad and close friends thinks it's a person, but 1 person thinks it's a group of raccoons, but I don't see how they could get out. I'm going to move them to the barn in a stable soon. The animal/person isn't afraid of my dog either. She's a mutt with great pyrenees in her.