I don't know where to start, I have 12 chickens (had 13) and I'm terrified of hawks even with my 2 roosters they've gotten bold and killed one of my hens. I now only want to allow them to free range when I can watch them but I don't want to keep them in a small run for 12 hours while I'm working. I need something big that they can stay in days at a time if need be, and I need to be able to hawk proof it with either some kind of netting or fishing line. I have no idea what kind of width x length I would need, if anyone is good at chicken math please step in and help me figure this out! Also how could I secure the netting without it caving in during the winter snow and ice? Thank you, and if you could reply soon it would really help ease my mind.