I searched for an answer to this question, and didn't find exactly what I'm looking for, so here goes... I have a small bar light in my chicken's roost. I've been using it on a timer to help with consistent egg production, but I don't think it's working, as two of my layers have stopped laying now that the days are shorter and colder. That's not a big worry for me though. So, it's getting colder, and I've done a lot of reading about using vrs not using lights for heat. Really, this little bar light I have puts out a small amount of heat, and I wouldn't mind leaving it on all the time for my 4 hens. However, if I leave it on all the time, will this affect their laying... will they be stressed and lay "too much?" If the light's on all the time for heat... will they sleep well? I've read about lights for heat and lights for eggs, but not about one affecting the other. What do you think? My coop is small. The food/water is on the bottom, and they have a roost on the top. Currently, the bar light is in the roost.