My chicks are almost 2 weeks old now, and I decided they needed a little more space. Crazy how fast that seemingly huge dog crate started to look smaller and smaller. :P So I wired my second crate to it, removing the back panels, and while I was at it I took down the cardboard "walls" I'd had up...
My dog crate brooder! It's an extra large crate that used to be my 90 lb retriever's. I have another one that I can remove a panel from and attach to this one when they get a little bigger to give them more space.