hi all! Looking for advice on adding three hens who need a new how to our small flock of 4 hens and 1 rooster. My 5 are about 6 months old and free range on 2.5 acres during the day and sleep perched on the roof of their coop which is inside a horse stall. I am reading conflicting advice: transition them with new hens in a temporary cage or such or just throw them in with the space we have...advice from those with similar experience?