I have five 20 week old hens and a roo that are VERY AGGRESSIVE towards my six 10 week old chicks . The chicks are ready to start free ranging, but the flock was trying to kill them as soon as they stepped a toe out of the toddler run. I finally just took my big girls and put them in the toddler run, and let the chicks out to free range, and created a nook for them in the big girl run for them to sleep. So, I am trying to go ahead and integrate them into the main flock. I left my big girls in jail for two days. Last night, I removed my least aggressive hen Gladys and set her up on top of the coop (the hens are tree roosting girls) . This morning I am happy to report MINIMAL PECKING! She, of course, has to display her dominance, but is not trying to kill the chicks like before or obsessing over them. She stays by the toddler run because her sisters and hubby are in there. I am going to wait another 2 days and remove the next hen, Ethel. I am hoping that this works so that I can let everyone free range for food . I may have to re-try this next month if it doesn’t work out this time but lets hope for the best. Any tips?? I do have a question! If I were to let the rooster out next, would he be more inclined to see the chicks as his flock if I keep the girls penned up? If I let him be alone with them for a few days then start letting one hen out at a time would that be better? Would he keep the hens in check or attack the babies? I mean if he is at the top of the pecking order there isn’t much to challenge right?