We have 12 hens of mixed breeds and all were laying regularly....about three weeks ago we went from getting 8 or 10 eggs a day to 1-3! it has stayed consistent. everyone seems healthy, they free range for food, nothing traumatic has happened, and we have not seen evidence of egg eating. We have also looked EVERYWHERE to see if they are laying elsewhere and can't find anything. Any thoughts?! Even though it is spring and light is longer now, we turned the light back on in their coop to see if that helped but did not seem to change anything. HELP!