So we worked all day to fence off a section of our yard so that the hens and pullets could mingle. Since I had the pullets and the hens in parallel runs the hens did not peck at the pullets. The alpha hen was/is the mother hen of the pullets so I think they will find their place in the pecking order soon. I made sure the fence was high enough so that they would not get out. After dark I went to see all all of them had found their way to rest for the night. I counted and there was one missing. I looked and looked and I could not find her. I asked my family to help me find the lost pullet. We found her. She had gotten stuck in the small space between the coop and the fence. I have to make sure they cannot get into that section. It is going to be easier when my hens and pullets are one flock.