Surprising not to see anybody suggest a hoop coop made from cattle panel. You can make them pretty inexpensively - going up in cost with heavier support framing (2X4, 4x4, 4x6 & 2x4 vs 2x2) or a metal/plastic type roof vs a tarp. 2 - 16' x 50" panels now cost $21/each at our TSC (this will...