Have eight hens and they have quit laying eggs. Used to get anywhere from 6-7 eggs a day, now down to 2-3..... Hens are all less than 2 years old. Had one hen taken by a hawk the other week. Are they suffering emotional trauma from that? When they are let out to free range now, they stay under cover. Don't let them out very often, can't afford to loose many more. Started with 10 hens, down to 8 now. Just don't understand why they are not laying? Any ideas?