I'll be honest here, I raised numerous chickens over the years but they were all Asian game chickens, Thai, Asil breeds. I raised them in Asia for three years and I never had any issues. We fed mostly wheat, corn, and scratch along with rice occasionally. Fast forward 15 years later, I am helping my parents with their retirement flock of BOs and a few RIR and GCs. My parents are hoping the BO hens will set and rear their own while the RIR and GCs will be for eggs/meat. They are free ranging chickens in a 2000 sq ft enclosure. So my question has to do with feed. I see now that there are 4 main types of feed; chick starter, growing feed, layer feed, and flock raiser. Is all of this NECESSARY? So if I have a hen with its chicks, I have to feed both the hen and the chicks chick starter? Not to mention if I don't isolate them from the rest of the flock, I must feed the rest of the chickens chick starter? But then what happens to the layers? I know I must keep my RIRs and GCs separate since they should get layer feed but my chicks can't have layer feed? Lastly, what happens when I have two or three hens with different aged chicks? IS this all even realistically possible to separate all the birds? Back in Asia, with our Asian game chickens, they were all fed the same grains and the chicks weren't given chick starter or even crumble. The hens took care of the chicks and the chicks just ate whatever the hen could find as well as broken pieces of rice, wheat, and corn. I'm just trying to figure this because I have a real life, multi-age, free ranging flock. PS, I am a seasoned pigeon man so I am not just a chicken guy.