At what age do chicks starting putting themselves inside to roost? Got (12) 7 week old Barred Rocks. They go in and out all day long, (75 deg and sunny) but don’t go back in coop to roost. They all huddle up on top of one another in a corner of the run. I have to physically put them in the coop and shut the door, as it will get down in the 40’s at night.