I have some pullets to introduce into the big girls. My problem was I didn't have another run near by and I didn't want to tie up my dog crate as I use that to carry in and out the toddlers. So I had to build a small run to put inside the big girl's run. Being busy with farm work I had to build it in "stolen moments". Times when I had a minute or two go put in a screw or pound a couple staples. I finally finished it last night and put it to use. Now I have a 6x6x6 dog kennel (given to me) to turn into rabbit quarters for the bunnies that Kute Kitten posted about!