tonight when I went to check on my hens, I found 3 of the 4 in their coop. I looked outside and the 4th hen was lying in the corner of their fenced area across deom the door. She wasnt making any noises and when i walked towrds her she did not move. I picked her up and carried he into thw coop. She didnt seem hurt. She started to ruffle her feathers ns climb on one the perches. I guess I'm asking if anyone has experienced anything like this with their flocks. It was about 9 in the evening and rainy and foggy. I'm wondering if something scared her???