A year of chicken-keeping and I still have dumb questions. LOL So, when the time comes to mix my little girls (almost 9 weeks old and not ready to integrate yet) with the big girls, how do I handle the food situation? The big girls are on layer feed while the chicks are on crumble. Should I switch all food to crumble and trust the big girls to partake of oyster shell if they need it? Keep them separate until the little girls are almost old enought to lay? (which seems like a looooooooooooong time) I can tell the little girls are desperate to break out and play with the big girls, but it ain't happening yet, well, until we get all our chicks in a row so to speak.