Hi! I have 8 pullets about that are around 25 weeks and added 4 new chicks a few weeks ago that are about 10 weeks now. They have been in the coop together for about two weeks now. The question I have is about their food... the man at the feed store told me that I could mix the organic layer feed that I'm giving to the older girls with scratch grain and that then they could all eat it. I also have free choice oyster shell and grit in separate dishes out for them. Am I doing the right thing or is there another option (preferably organic) for my girls? Thanks