My small flock of 6 hens is now down to 2.5 and I'm not sure what to do. We had them running free in the backyard (about .5 an acre) and had to clip their wings so they didn't fly out. After clipping them short we woke to 1 missing, 2 dead and one injured. The one who is injured won't eat, won't open one eye and has lost her spunk. What should I do? The ones that are left have stopped laying and refuse to come out from under a large tree. We are closing them up in the coop at night, but they seems shell shocked. I feel like the worst chicken mommy. I don't have any idea what could have done this or how to prevent it from happening again, short of leaving them penned up, which I don't want to do. Any words of wisdom?