I've been raising quail for some time but am new to chickens. I purchased a mature rooster, 9 month old laying hen, and 3 young hens not yet laying. For the first 14 days the hen laid an egg a day, skipped 2 days, laid 2, and hasn't laid since, about 10 days. Nothing has changed in available grass or feed. Any ideas on what may have caused her to stop all of a sudden?