I forgotten that I had a rabbit cage not being used out in the barn so tonight I ran outside (in the cold, grass is wet, in shorts and no shoes!) to get it. I cleaned it up in the bathtub and set it up in the dinning room to use as a brooder instead of using a cardboard box. Well, the bars were kinda wide spaced but I didn't think that they were wide enough for a chick to get through! OH BOY WAS I WRONG!!!!!! I went to check on them after 15 minutes of leaving them alone and I had 5 little chicks out of the cage running around the dining room!! It was fun to watch but I gathered them all up and put them back in the cage. This time I cut up the card board box and taped it to the bottom part of the cage. Just high enough to equal their height! LOL, smart chicks.