I have 7 1/2 week old chicks. We moved them to the coop about two weeks ago. They are out during the day and go up at night. About a week ago I noticed when they went in for the night they were huddled in a corner and climbing on top of each other. I put up a light and they acted normal. So at night we turn the light on. Last night I noticed they were trying to sleep in the nesting boxes away from the light. I'm confused on what we should do, leave the light on or turn it off.