I went to lock my coop door tonight and found my third partially eaten chicken. I lost a 9 year old belgian d'anvers on saturday, than a cochin roo yesterday and today I lost another d'anvers. The two d'anvers were elderly but the cochin was only a year old. Their heads were all eaten off and several feathers removed. It is happening while I am at work in the afternoon. I only let them free range when I am home so whatever this is, it's getting into their run and coop. I am at a loss, I have skirting, wire cover, and hardware cloth over the windows.