I made a 4'x4'x10' tractor cage-style from 1/2" EMT and wire fencing, attached with zip ties. It's very light. So light that yesterday it blew over in a storm! Fortunately we were home at the time and heard them clucking. It was chucking it down and they looked very bedraggled. I herded them back in and they took shelter once again. I now have it safely tied down with tent pegs!