I would recommend electrified poultry netting for a run. You can surround a much bigger area for less$$, than a wood framed hardware clothe run. I have all kinds of ground preds here, except for bear, and this fence has protected my birds, going on 4yrs. I started with 300' of it, and have since bought 350' more, to expand the range a bit. You can power it with 110V house current, or go with solar. As far as the birds hurting themselves, with the fence. I found they quickly learn the fence bites, and they don't get into it.