Its that time of year again and I have (7) 6 week old chicks, all fully feathered. I think they are ready to go into the run/coop with my 5 older chickens and 2 guinea hens. I'm unable to separate them once in the coop so is it okay for the chicks to start eating layer food? I can have a few playdates before I move them in completely but there is no simple way to divide it . Any advice?