I had one rooster and four 2.5 year old hens. This week I added four hens, after a quarantine period and after a period of them being next to each other in different pens. I have a coop with attached run. I have had them in the coop/run together for four days. They are all shut into the coop together at night. The coop has plenty of room for all of them. They are still very much segregated. The hens we had roost on one side with the rooster and the new ones roost on the other side of the coop at night. During the day, there are occasional squabbles, but for the most part they stay away from each other - one set in the coop and the other in the run and then vice versa. Does this just take time? Will they ever form one flock? I feel bad not letting my older hens and rooster not free range as they are used to doing, but I can't until they are all assimilated into one flock. Thank you for your input.