Is it a good idea to take a few 11 week old pullets and put them in with my 7-8 week old chickens? My chicken house is a single wide mobile home and I would like to be able to introduce my 5 pullets to the group. I also have 2 11 week old roosters that I would hold off on until I see how the pullets and the 7-8 week old chickens get along. There is still a big size difference. The 11 week old chickens are new hampshires and they are so huge already and I don't know if they are going to get any bigger or not. The 11 week olds and the 7-8 weeks haven't seen each other but they can hear each other.