Compost King
Free Ranging
Hawks can't take off with a chicken vertically, you do not even need netting across the entire area. Ropes across the top of the run will stop them from even trying if they are spaced tightly enough... or partial netting. But if you do not mind spending just net off the whole thing to be safe. I use all that left over straw bale string I collect and throw a few bamboo poles on top of that to deter hawks.