We've installed a timed light to come on a for an hour past dusk to give them time to settle in for the night. Then back on a few hours before daybreak to compensate for the shorter days during winter. My neighbor feels that's better than having them come in when it's almost dark only to have the light on for a few more hours. I had decided to try it his way, although I am going to ask another friend what she does since I know she has a tied light in her coop.