This thread is of great interest to me as I'm building my first coop right now. The coop is on a concrete slab so I don't have to worry about anything digging in and they'll be locked up at night. My issue is that I really don't want to cover the run. The run will really be to keep the birds out of the rest of the yard, more than to keep things out. I'm in the metro area of Colorado so also have all manner of hawks, owls, coyotes, raccoons, foxes, skunks, etc. Again, as the chickens will be locked up at night, my only real concern is hawks or early owls.
As I build my coop, I take the birds outside everyday and they hang out in a cheapy PVC and bird netting (the cheapest I could find) run that only serves the purpose of keeping them where I can see them. Literally as I was reading through this thread today, I looked outside to see a hawk sitting on the ground outside the temporary run looking at the ducks and chicks. Fortunately it didn't try anything because it could get through that bird netting in a second.
Anyway, my planned run area has a bush right in the middle of it that prevents me from effectively covering the run without greatly reducing the available space for the flock. In addition, it is in a sloped portion of my yard that I didn't really know what else to do with anyway. I'm under the impression that a bush to hide under is not good enough, but I'm not sure what else I can do without changing my entire plan. Mostly I want to be able to walk around in the area and not have it looked like a prison yard with fence everywhere. I could pretty easily do a series of staggered roofs with corrugated steel that birds of prey wouldn't be able to see through with the idea of out of sight, out of mind. i assume that a hawk won't ONLY get birds from an areal attack, and if they have to walk in from the side, they'll still wreck havoc on the flock. Thoughts? I assume most answers will be variations of "suck it up butter cup and cover your flock."