I'm banking on the "positives" posted by everybody so far. I was raising two bantam cochins with four LF chicks of the same age - at 11 or 12 weeks old, and they're all outside in the "adolescent" coop & run, surrounded by the run occupied by the grown up LF chickens.
I say "was" because I just came back from the feed store with more feed, some food-grade DE, a 40 lb bag o' BOSS, some freeze-dried mealworms, and 10 lbs of chick starter feed for the two, new bantam Silver Sebright chicks I picked up. Those last two items were NOT planned at all! They were the oldest chicks in the bin, probably 2 weeks old (because the feed store gets its shipments of new chicks on Thursdays and there were a bunch of younger chicks in with these two).
Bantams, so they're straight run.
Please be pullets! I did notice their tail feathers were more indicative of pullets than roos, if that usual trait is working on bantam Silver Sebrights. Right now, the little things look more like bald eagles than anything else!
I'd put away the brooder almost 3 weeks ago.
When these grow up enough to go outside, I hope I will have totally integrated the other adolescent chicks, so I can use the segregation coop and run for these two new bantams.
So that means I will have 4 bantams (and two ducks) living together with 13 regular sized chickens. I'm really supposed to be limited to 13 chickens, so I'm pretending the bantams will just be invisible amongst the others.