I have 3 week old chicks right now. I am moving the 3 week olds to the coop this week, right now they are in a very large brooder. I am new to this and am not sure what to do. A vacation bible school has 9 chicks - a little over a week old that they need to find a home for. Can I put the younger ones in with the 3 week olds and will they all be ok? I was thinking of putting them in the coop with the others but separated and with their own heat lamp until they are a bit bigger. Would that be ok?