Ok, I believe I am at the point I will soon need layer feed? This is where I am getting confused. I have 9 week old chicks that are getting the chick feed and will soon be changed over to grower finisher ( I think I have that right) I also have 4 month old silkies & 3 & 4 months Orp's. I have the older ones on grower/finisher. Will I need to change them to layer feed? If so, when should I start doing that? I currently put out the grower/finisher and I also have a separate bowel of oyster shell available to them but it only seems like the buffs are eating it right now and not much of it. Do I need to supplement them with the oyster shell if they are on layer? I am just starting to get myself all confused of when & what to feed them now. Thanks!