I have 4 hens and a rooster. They roam the yard 4-5 hours then get back in coop. One hen missing. I found her sitting on eggs in liriope in yard. Should I move hen and eggs to coop for safety? We have dogs, cats and lots o black snakes around. Or put in incubator? how do I make cheap,reliable incubator? Other chickens have ostracized this hen. Why? will they get over it?