i have 3 black cochin/RIR that hatched on christmas. they have been outside in the coop for about 3 weeks and they want so badly to live with the rest of the flock. they have a nice section in the coop, but feel they are beening left out. I was wondering if it is ok to put them with the rest of the hens? Only reason i ask is about the feed. i wasnt sure if the chicks could go to layer feed yet.