Hi everyone i am new to Backyard chickens site and to raising chickens!! I have 8 chickens who are spoiled rotten! My oldest hens are 6 months old and haven't started laying eggs!! What am i suppose to do? We are feeding them layer feed and they have lots of sunlight,water, a perch with two levels and two nesting boxes. They are not free range because we have LOTS of cats that run around our neighborhood. We have 2 Americana's, 2 White crested polish, 2 silkies, a silver lace and a Buff orpington I love my girls!! PLEASE HELP ME!!!