Hello to all! I have seven 13 day old chicks(some pics below.) 2 Buff Orpingtons, 2 Plymouth Barred Rocks and 3 "Aracaunas" really Easter Eggers. These little ladies are growing like weeds and look so healthy. I'm ecstatic!! But I built one of those rubbermaid tub brooders with a heat lamp and a dimmer switch which has served us well. I can see though that they are swiftly outgrowing it. I have plans to build a bigger brooder to get them from there to the coop outside eventually. I need advice on what type to build (simple please) and how big to accommodate them. TIA for any help and pics.