Hello, I have 9-week old chicks, 5 of them, one roo and 4 hens. I am wondering how hight the roost should be and how often I should raise it. It's about a foot off the floor of the coop right now. They all use it and it'a 6 feet long. Occasionally I have one or 2 on the floor, thinking they don;t need the heat from the lamp as much as the others. I've raised it since taking this photo. i would much appreciate some advice, thank you.