My big brooder is a "Travelin' Tot" play pen. They get plenty of ventilation, I can see them from all sides and it's plenty big enough. It was really cheap, cause I got it at a yard sale (3.00) and I've used it for two hatches now. (I disinfect between uses). I haven't had any trouble with pecking issues. Just a suggestion as to what you could use for brooders if need be.