I have some one year old hens and I am about to introduce some 6 week old chicks to this flock. I want to know since they will all be together if it is ok for the young chicks to eats what the older hens are eating (laying mash). I don't know how to introduce them without the chicks being able to eat the laying mash. I still have some chick starter that I will continue to have in a feeder. Both feeds will be available to the young chicks and older hens. Is this ok?