I had 8 - eight week old chicks that were out in the coop and decided to get four more babies from Rural King. I sectionedoff one corner with chicken wire and put the babies in. About a week later I went out one morning to feed them and found all four of my babies in with the larger chicks and two of my older ones in the babies "pen". No one was bloody so I took down thepen and they have lived together happily for a couple of weeks now.