I have 7 laying red sexlinks, 3 years old, and just acquired a friends almost a year old Rhode island reds. I introduced them 2 at a time, and they seem to be doing ok. Not chummy, but not fighting. My coop is quite large, with nesting boxes a few feet off the ground, and partially hidden from the floor of the coop. I don’t think the new girls have found the nesting boxes, so not laying now. Also they don’t know how to roost up on the bars at night, and are sleeping on top of the feeders. Any suggestione would be appreciated.