Wife and I went up to Crossville Tennessee this past weekend for my son’s wedding. Only saw 4 chicken houses as we went up the country road way through South Pittsburgh to Dunlap and Crossville. But they had what looked to be 6’ chain link fence around the entire perimeter. I saw no grower signs like we see in bama. My guess is it’s to prevent wild hogs maybe from bringing diseases into them. Only a guess