This first batch of chickens we had, we were inside our shed, which got way too hot a couple of days this past year when we were not home. They all survived, but it was HOT. I recently picked up a bunch of cinder-blocks and I am considering creating a good sized brooding box outside that I can keep there. I would make a couple of blocks on the side remove-able (with screen) to allow circulation, and room for about 50 chicks. Does anyone else out there have anything similar? Tips, suggestions?