I have 4 chicks ranging in age from 7 to 10 weeks in a brooder in my garage. I have 6 other chickens (2 roosters, 4 hens) who are 24 weeks and are free ranged and in my coop outside. My 6 birds in the coop are on layer feed, and my 4 in the garage are on medicated starter/grower. Both flocks do not have access to seeing one another, but i have introduced them a few times, to which one of the roosters acts aggressive. My questions are, how should I introduce the two flocks when they're on different feeds, and when or at what age should I try to mix the two flocks? I've read so many different thoughts on how to do this, I wanted to get some of your thoughts. Thanks very much for your time and help!