I have the new large flock added to my 2 existing hens. I still have fog crates in the coop although the last 2 nights haven't used them. My hubby gets up with sun and opens the coop door right away. I'm afraid too much time cooped together will cause the 2 hens to attack again. Everyone seems happy. The chicks still flee in the run and the hens are certainetly on the top of the pecking order. I wouldn't say they have mingled perfectly but they re working it out. Skiddish to take the crates out. I feel that if the hens go nuts the littles at least have obstacles to hide behind or in! There will be 8 more chicks to add next week... Can't wait for thi part to be over an have one big happy flock!!!