My original flock was 3 pullets and 1 roo. They are now 8 week old. I decided a couple of weeks ago that I would like to expand my flock, so I purchased 2 more 3 week olds. They are now 5 weeks and getting ready to move out of the brooder, so I am now wanting them to go into the coop with the big girls (and boy). For the last week, I have been letting them free-range together during the day and then the big girls go to the coop and the babies back to the brooder at night. When the babies got too close, the roo pecked and chased them away. Now they just free-range together, but the babies simply avoid the bigger girls by grazing in another area of the yard. It is like I have two flocks. I don't want to try to force the integration, but how can I encourage the interaction during the free-ranging time? Eventually, I will have to move them out of the brooder and into the coop at night, any advice?