I have been trying to keep the chickens in the dark, BUT they all huddle in the corner, I then turn on a night light and they seem to relax and go sleep on the perch, Should I just let them suffer a night or two all huddled up together or keep turning on a 5 wat night light for them, any harm in keeping it on? They have only been in this new coop for 4 days maybe they are not used to the big space they have yet, but they use it all day long to get out of weather, seems night time they are scared???