What a handsome lad! Do you have an outside shed that could be repurposed as a coop for him? If not, you can quickly, easily, cheaply put together a lean-to type shelter to protect him from the elements with a couple of sheets of zinc roofing to make two sides of a triangle with one side opened and another sheet over the top of the closed side to get him out of rain and wind. This makeshift lean-to will do until you can get him something more substantial or build a more solid structure to 'hang' this roofing material on. Is your property fenced in a way to keep out most predators? It would certainly be better than just out on the grass!