My Barred Rocks are now 15 weeks old. I moved them into their new permanent coop about 7 weeks ago. I have always kept some type of light on for them at night since the beginning. When I moved them into their permanant coop, I did not put a light and they went absolutely crazy at nightfall. I fought constantly for the first couple of nights as they were screaming and climbing the walls, and ended up having to put a low wattage light in the coop. The minute I put the light on, they went to sleep. The run is roughly 14'x7'. I am still putting the light on at night. The funny thing is they will make all sorts of noises trying to get my attention as nightfall approaches telling me that they want the light on. Immediately as the light turns on, they go to their roosts and go to sleep. There is enough room for them to get away from the light if they want to. Some move away from it, some sleep directly under it. However, if I go out very early in the AM before the sun rises, they are not near the light anymore. The reason I am posting this is because I've read so many articles regarding lighting affecting laying for chickens, etc. What do you think about my situation?