Looking for tips/advice/reassurance. First time chicken mom. I have 2 18 weekers in a small Coop in Chicago city lot, long story but also have 2 10 weekers. Have been trying to integrate them over past 2-3 weeks, supervised free ranging and days together in Coop/run with barrier in the run. But when all in run/ Coop lots of pecking bullying so 10 week old still in house at night. Today they spent entire day in run with barrier and then no barrier pecking less. So big girls went to bed, so I put in little girls and closed door to Coop train them. Some squawking and little girls are very freaked out. Do I just do the tough love and leave them locked in Coop all night?! Let them out at crack of dawn? Stressing.