Hi all. I've been reading this site for a long time! I'm glad to finally have a reason to post. I am the proud mom of 4 young chicks. They are 3-4 weeks old now and have completed their move to their new chicken tractor. It has a run area of 4' x 12' and a coop area 4' x 6'. I had wanted to add 2 more chicks that are hatching today but I am not sure I have the space and am concerned about mixing the ages. Obviously, the wee ones will be inside for a few weeks. The older 4 are in the tractor with a heat lamp at night, it's been in the 80's during the day. So here are the burning questions.. Do I have room for 6 standard size hens in the above tractor? Are chicks 3-4 weeks apart in age difficult to mix? Thanks for your help in advance.