What is the difference, nutritionally, between chick starter and grower feeds? These are the feed instructions for the chick starter that I am using: "Feed free choice to all classes of poultry, including pullets, broilers and laying hens. Supply laying hens additional layer blend oyster shell to increase shell hardness and quality. Supply appropriate hen or chick grit." I have chicks from 2-7 weeks old. So I guess that I can continue to feed all the starter that I have. BUT, I am planning to switch to another brand (without corn or soy), that has Starter, Grower, and Layer feeds. They are recommended to change from starter to grower at 6 weeks and from grower to layer at 16 weeks. So, when do I switch their feeds, since they are all a few weeks apart? Right now, the 4 and 7 week old chicks are all together, and the 2 week olds are kept separately.