They've had a light at night until the last 3 nights because 1 still hadn't feathered out completely and would hang out under the light. There's just 5 pullets. They'd get up on their roosts at night, until now, since their night light was removed. They're beyond the age of needing heat at night so I've been weaning them off the light with the mild night temps we've been having. Since then they huddle together in a corner on the floor and won't roost. I've never dealt with this but I've always had spring to summer chicks, never fall to winter chicks.