Anywhere from 1 to 8 of my nine birds like to spend the night ON TOP of my coop. So every night one of us has to go out, take the birds off the roof and put them inside, so we can safely lock them in. Is my 4-foot tall coop too short? This is getting to be a problem and I wish we didnt have to do this for the rest of our lives. Only time they are all inside is if it is like 5 degrees out. In the summer, they might be all inside about twice a month. Thanks for your suggestions. From Michigan.