I'm anxiously awaiting my shipment of 8 chicks the first week of May. I was planning on using a dog kennel (about 24" x 36") for my brooder but am worried that it will be too small as they get larger. Saw a neat brooder made out of cardboard boxes that looked very efficient and much larger. The question is: do I start in the kennel then go to the cardboard when they start looking crowded or just go ahead and start with the larger cardboard brooder? I don't want to stress or upset them with the change...but then again it may be a nice transition before moving outside to the coop. Thoughts?