I was searching through the site here, but didn't see to much about having a built in brooder box in your coop. I am going to keep looking, but thought I'd ask as well. I saw a couple things and I think it is an excellent idea. Since we are making external nest boxes on one side of the coop, I am thinking of making an external brooder box on the other side. I could access them from the outside, but would have wire on the inside (plexiglass when they are real tiny to keep the heat in) so the big girls could see and get used to the babies. What I am wondering is, does this work and make adding new chickens to the flock easier? Anyone do this? Since this coop will only be 6x6, I thought this would be a good way to add a useful thing to it without taking up precious floor space. When chicks aren't in it, I could open it up and they could have the use of the additional space. It would be 2x5 and about a foot and a half high. The coop will have overhangs and everything will be caulked and sealed to prevent any leakage. I will make the screen door so that it lifts up and out of the way when the brooder isn't in use. I could also let the little girls out into the coop part of the day after the big girls have laid their eggs. It would give them room to run and play. Is this a dumb idea? I really have to get everything I want in this coop as I will probably never get my husband to build another. Plus I seem to be getting my new chicks in shifts as the older ones die off, so I only ever have a few at a time. My husband would be very grateful not to have chickens in the living room. Let me know what you think about this idea or if you do this and how it works. Thanks so much.