Hi- Im new to this and am worried about one of my hens. She is a 16 week old buff orpington. I noticed yesterday that she was laying around more than usual. Today she hasnt wanted to come out of the coop. She looks normal, but is slow and stands in the back corner of the coop. My other 5 hens are acting normal. Is she sick? Are there things hens do before they start to lay eggs? Any help would be appreciated.