Just wondering if I should set up another brooder.....
With all silkies at first, each week, I'd add new babies. I did that for 2 months. Then I added 3 full size chicks, and then 2 more silkies a few weeks later. At one point I had about 20 babies 8 weeks from oldest to youngest. Last week I moved ALL the silkies in with the adults. The 3 full size chicks are alone in one of my coops.
I would keep them separate for about 5 days, to let them get stronger, then I put them in to the community brooder. Just keep an eye on them at first to see how the other chickens react to them.