I have three birds that will not roost with the others in the coop that is inside the barn. The are very timid and get picked on sevierly when they are inside together. In the run, they are fine. Up to now, they have made their home in a large tin watering trough I turned on its side and layed a piece of plywood across the front to stop wind or rain, I also put pine shavings in the bottom. Today, it snowed and got really cold. I hate that they are staying out there and not going in the coop, but they just won't go in, and frankly, I dont blame them. It probably averages about 10-20 degrees here in the winter nights. Do you think they will be ok in that metal thing at night?