Some feeds have everything your birds need so ck with the bag and see. I don't give my girls anything and they are nice and healthy and have nice strong eggs. Yes most of mine free range also.Right now my girls have access to 18% starter/grower feed, water, and grit. And they free-range most of the day in the half acre backyard. When do I need to start providing oyster shell and/or egg shells? I had heard it's good to put it out with the first egg.