I have 10 six week old chicks(Barred Rocks) that are in a nice big coop with plenty of roost and no competition. I know at least some of them can fly as high as the lowest roost because some have flown onto my shoulder which is higher. I've put them up and on the roost during the day and they hop around a little, then jump back down. But they all sleep in the corner in a pile at night. I was wondering myself what age they usually decide to go high at night.