Last Fall, (our first with chickens), after lots of reading we decided to add a little light to their coop as it had no windows and was very dark. We had a 40 watt bulb on a timer and had it on from 5:00 am to 7:00 pm. They went into the run, but liked to spend time in the coop too. I noticed today that sadly the days are getting shorter. Our girls are starting to put themselves to roost about 5 pm even though they are in a new coop with windows and it's still light out. So . . . if I want them to have 14 hours of light to stimulate laying this fall/winter/spring when the days get shorter, when do those of you who add it, start to supplement lighting?? The almanac says we have about 14 hours of daylight now from sun up to sun down; but there is the twilight time that adds about another 30-40 minutes on each end.