We got 6 chicks last Friday that were 2 days old (roughly) 3 Dixie rainbow, 1 naked neck and 2 unknowns. We just got 6 more 2 day old chicks today, all Bantams. The Bantams are so much smaller than the others. Can we put them in the same brooder or do they need to be separated for a few weeks? If separated, at what point can you put them together? Thanks!