I know I know. These questions never end. I'm sorry. 4 pullets going on 15 weeks. 15 various chicks about 8 weeks. I've asked and read all suggestions. Weeks of see don't touch. Lots of hiding places added to run, shelves, half walls, plywood overlapping in little mazes chicks can fit through but not pullets so chicks can get back into the coop away from the pullets. Upside down buckets breaking up the chase path. Coop and covered enclosed(for winter) run combo is about 12x20. Multiple feed and water in both coop and run. They had a few good half days together, only one pullet really being mean. But it seems things are getting worse not better. I had the pop door lowered to just barely allow the chicks to squeeze through but now the pullets are determinedly forcing their big bodies through there to corner them in the brooder. No blood yet but one little Cochin won't even come out anymore. If I kick 2 or 3 pullets outside(including Satan the devil pullet) and force all the babies into the run they do ok. Then Satan comes in and it gets out of hand again. Should I just keep them apart until they are bigger? At what age would it be better?