Hi, I have a 4x5 house. (5 chickens) I now keep a light on 24/7. partly because my chickens are still young ( almost 7 weeks) and it hasnt been staying very warm going down to the low 60's at night. I wonder if they are getting too much light. should I only use a night light or leave the 60 watt bulb in there? How often should I shut it off? I do lock them in at night.... I do have a cardboard box they go into but they don't do that much. I will try to figure out how to post some pics of my coop and run, and see if you guys have any constructive criticism for me.