In the past week I have came home from work to find 2 of my Hens with their heads chewed off and part of their backsides chewed on. I know it is a raccoon most likely as there is a big fat one wondering around my property. The only problem is my coop and run in enclosed all around with chicken wire and at some points doubled up. There are no indications around the bottom to say it's going under the fence so when the sun comes up I'll investigate the top a little better. I've had no predator problems for the past year and now twice in 1 week.