Ok so here the deal- we use a light to insure our girls get their 12 hours of light a day resulting in 12/12 eggs even now. Generally we turn the coop light on and then after it gets dark, we shut up the coop for the night and turn off the lights. Well, for the last 4-5 nights they just don't want to go to bed. We turn the light on, it gets dark, the don't go in the darn coop for about an hour to an hour and a half after it get dark. Why are they not going to bed?