First time with chickens here. I have 10-week pullets and 3-week old pullets. When it's time to introduce the 3-week olds to the older group, they will all still be on start n' grow food. But when the older ones start laying, they are supposed to change to different feed, but the younger ones should still get the starter, and Storey's Guide says it is dangerous to feed the layer to the younger chicks. Aside from the issues of introducing the younger group and how that will go, how do handle the feed needs once they are all in the same coop? (I know, I should have started with more chicks to begin with, but comedy of [human] errors prevented that.) My plan is to feed free choice. Storey's Guide gives complicated instructions for changing the protein percentage at various times of the chicken's life, various changes when they are chicks, in summer heat, molting, etc. Do people generally get this technical in how they feed their chickens? I'm learning that Storey's Guide isn't always considered the best source of information by folks on this forum. Thanks so much, this forum is excellent.