I lost three hens in one week! Fox or coyote from the looks of it. I found two security breaches that I mended. I have a coop with a 6 x 6 x 6 walk in run attached to the coop. The enemy looks to have jumped on top of the coop and entered where the run meets the coop. I have since nailed a 2 x 4 at the joins tightening the available entrance area and stapled the chicken wire to the coop it self so any critters should not be able to slide through. It seems that once it slid down into the run it was trapped. It busted through the back of the egg / nest box to finally escape the coop. All repaired. I also found that there was some clearance at the base of the coop and the base of the run. I wedged bricks in the opening/ My poor Plymouth Rock survivors are scared as heck to be home. When I let them out to the yard they will not go freely back to the coop and I have to pick them up and place them back in. Survivors hardly eat or drink as well let alone lay again What should I do?