Hi Jenna, my new chicks a 3 weeks old. My older girls are kept in an enclosed run. This past week I cornered off an area of the big girls run and put a cover on it also so the big girls can't get in. I brought the littles out yesterday for about an hour. As soon as the weather stays in the 70's I will bring them out more often. I will do this for about a month. Outside in the day inside ( my house) at night. Then I will start to put there cage in the coop at night for about a week or so. Then I will let them with the big girls. I hate the whole pecking order and thought I would never do it again, but I did. I just drag the whole process out lol.