My chicks very quickly outgrew the plastic container I was using for a brooder. I was stiring their shavings 3-4 times a day, adding shavings daily and it began to smell after only 2 days. I decided it was because the area was too small for them. 11, 5 day old chicks in a 3X2 area with food and water. BUT, it was nice and warm! I moved them to my 4X4 playpen to give them more room. Of course, more open area, more heat loss. I put a tarp around the outside of it where it was mesh and then covered 3/4 of the top with blankets. I have managed to keep it at about 80 today but, it will get cooler overnight. I am really wondering if they would be better off in the smaller space? Today they are quieter, still chirping tough, They are all laying under the lamp. But, not huddled. They move around, play and eat. Poops are OK. I really am lost here! I know that if they get stressed it can take days before it affects them. I don't want to find out in a week I made a mistake!