I bought a small fan to install in the coop because it gets very hot here. It doesn't blow hard, or a whole lot, but enough to circulate the air in the coop. Is this a good idea or not? I read about keeping it draft-free and a fan would definitely not keep it that way. It is not a large coop, it is about 2 1/2 ft x 3 1/2 ft. They will be in the run and free-ranging during the day and only be in the coop at night. When I took readings of the temperature in the coop, it can get into the early 90's during the day and the upper eighties at night. What do you think?