I have 13 Hens of which 4 are older Ida Browns that were laying when I got them. They layed for about 6 weeks 2 to 4 per day. Now its been 5 weeks and no eggs. I also have 9 Barred Rocks that are 26 weeks and they haven't started to lay yet either. They all look healthy and are getting layer feed....but I dont know if I'm doing something wrong or not. Please help!