Ok, so my order from the co-op came in 2 separate batches. I now have 12 chicks that are day-old pullets, which I put in their own brooder box. Last week, I got 2 African geese, 6 bantams, 3 buff orpingtons and 4 runner ducks. They have all been happily living together in a big wooden brooder box for a week. I stopped at TSC on my way home from the co-op and found all their week-old chicks on sale for $.50, so I bought 12. They told me you absolutely can not put week-old chicks with day-old chicks, because the big birds will kill the little birds. I'm confused! My big birds and little birds have been getting along famously for a week... do you think the would mind some more day-old chicks in with them at this point? The day-old chicks are bigger than the week-old bantams, with all their fluffiness. My plan was to put the geese and ducks in the 2nd box, since they keep splashing the water everywhere and getting the litter all wet. I really don't want a 3rd brooder box... What do you think?