Do you think I should close up the hatch door during the winter time? I have 21 chickens in a large walk-incoop my husband built last winter. I made so many mistakes last year including shutting them all in because I thought they would be cold, heating the coop, hanging the water inside and ending up with a mess, and the list goes on. I am just wondering if I can leave the hatch door open or should I close it at night to conserve heat? To give you an idea of the size, here's a pic of it from last year when it was still in process.