I have 5 laying hens: A barred Rock, black austrolorp, and 3 easter eggers. I also have 6 pullets going on 4 months. I took out the layer feed because I read that it could cause younger birds not yet laying to have kidney damage. They were laying great but no eggs today and only one yesterday! I used to get 3 eggs a day. So this is not normal for us. I give them yard scratch and finisher mixed half and half. Any suggestions?