I have had pigeons for several years now and my coop has about 12 birds in it. I live in NW PA and the winters here are incredibly harsh. I have used heating lamps at night in the past to keep my birds warm but sometimes the 24/7 light provokes wintertime breeding which always results in dying babies. I was thinking about covering the windows in the coop and keeping a heating lamp on only at night so that the birds become nocturnal without even realizing it. This way the birds will be awake, warm and active during the cold nights and asleep during the warmer (but still cold) daytime. Does this idea sound crazy? And does anyone have any other ideas for keeping my coop warm in the winter?