My first 25 were in the office. First in one bin, then two bins, then three, then four, then into the back room in one pen, then two pens ,then to the coop. What a mess. Dust every where. Now I brood in the back room it's still dusty but I'm learning. The thing is all that peeping is like a signal to preds, saying "we're here, we're here".
I got a wounded chick in the brooder by itself. Not sure if it was another chicken or something else. Tore the fur off it's little wing. I had it in the house soaking its' wing cuz it was drying and sticking to it's side. I've had other hens brood with the flock and their chicks were all ok. Not sure what to do with the little thing. It seems healthy enough to survive, I just don't want to have to baby it.
My point, whatever you do for brooding make it a safe place , pred proof plus.