I have four hens who free range during the day. They are great about coming back to their coop at night and then I close and lock the door. In the morning the make so much noise until I let them out. I'm wondering if I can just leave the door open? I live on the island of Maui and we don't have any reAl predators and our neighborhood doesn't seem to have any free roAm dogs. Would their be any problem with my hens going wild and not coming home or laying outside their coop? What do you think? Can I just leave the door open all the time?