I have 3 hens/1 roo... all 1 yr old. Recently, I purchased 3 more pullets about 18-20 weeks old. after quarentine for 30 days, in a pen/coop where the 'oldies' could see but not touch... and leaving the light on in the coop one hr before dark ( they went to roost with the 'old' flock)...all is fine, but in the mornings/afternoons the old chickens will not have anything to do with the new pullets. Thankfully, they are not fighting. They will not intermingle or become friendly either. Occasionally the roo will intermingle but then decides to go back to the older hens. Will they ever accept my new birds? Is there anything I can do to foster friendly relationships?