Closing them up in a solid coop with a LGD roaming should do the trick. Make sure the coop has all the little holes not just at the ground covered. In case of coons, possums, skunks, or bobcats if you have bobcats around. And remember to shut the door. I lost 30 in a night last year (everything in that coop) leavening the door open while I was gone for a few days. I'm thinking about an auto door when I build a new coop.