I have 9 chicks that are approximately 7 and a half weeks old. For week and a half now they have been outside, housed inside the coop with 2 roos and 4 hens which are almost 7 months. They are, of course, protected because they are inside a large wire dog kennel with their own feed, water etc. Well yesterday, I let them out into the run . Boy were they flapping all over the place. I am sure they loved not being "cooped up". The older chickens didn't bother them for a few minutes. You could tell that my dominant roo was concerned as he kept crowing and pacing. After about ten minutes of them running around the older chickens decided to chase them and peck a little(really only when one of them was farther away than the others). Nothing serious. The chicks ran right into the kennel and wouldnt come back out. That was was the end of that adventure. Today I just opened the cage again and they once again came out and flapped around, investigated, and played. The older ones again ignored them for a bit and then aggravated them and chased them into small corners inside the coop. It was funny and a little frightening to watch. I dont want anyone to get hurt. The chicks all safely made their way back into their cage for safety and I latched it . I'm hoping if I do this a little every day or so that they may start getting used to each other's company. I just think the little guys need some room to run occassionally but they are still only one third to half the size of the older chickens but quickly growing. Soon they wont have much room to run around the cage. My goal is to have them completely out of the cage by 12 weeks or maybe sooner if I can. Any thoughts?