Thanks for the info. about something killing my hens. It happens in the day while free ranging. At night they are in a pen, chain link, steel roof, that used to be a dog run. Around the bottom of it is 2 strands of hot wire 6,000 volts. That is enclosed in another wire pen with 7 strands of hot wire. Have coons, opossums, coyote's , various assorted other vermin out here. I sleep well at night, but never let the girls out unless I am home and I still worry. Thanks for your help. I,ll check the site you suggested.