I added a 12 foot string of blue rope lighting to the interior of my coop. (4x4 floor). Question is, will the lighting keep them awake? I noticed they didn't settle down until 10:30 last night and only after the light was out. I'm not sure if it was the heat last night or the light. Do they need a small light or should I just keep them in the dark? Edited to add: I keep water in the coop at night. Is thier vision so poor as to need light or can I do without?