We raised 7 chickens last year and this year have very carefully introduced 3 new chicks to the group. The chicks are now about 15 weeks old and just a couple days ago were completely merged, full time, with the older chickens. The older chickens are eating the chick food and vice versa. Is there a problem with the chicks eating laying food at this age? We are giving them non-medicated starter food so the older chickens won't lay medicated eggs, but I am worried about egg binding if laying food is given too early. Should I be concerned and if so, how do I keep them from eating each other's food? Thanks!