So I've been working the last couple weekends on expanding my chicken run. We got away with free ranging our chickens for a while, but predators seem to be keeping a pretty sharp eye on 'em lately. Plus they kept traveling further from the coop as they got older and I'm not in to having them leave their little gooey presents on my front lawn (or my neighbors back lawn for that matter). I still want my chooks to range...so my idea is to set up a paddock system with three ~15x20 foot paddocks plus a common area that connects all three and the coop. I'll plant chicken forage plants, create good bug habitat and rotate the chickens through the paddocks so they are always moving into fresh greens and bugs. Total space will be in the neighborhood of 1000 square feet for four White Leghorns. Which brings me to the fence. These Leghorns are pretty darn good fliers. Since their existing coop and attached run is entirely enclosed, I've never had to worry about fence height. Now I do. I also want my cost per egg to remain at or below organic grocery store prices (amortized over a couple years of course ) and tall t-posts and chicken wire adds up pretty quick. So here's my deal: I bought 5' t-posts and 4' chicken wire for this paddock system. So what kind of moron am I anyway? A 4' fence? FOR LEGHORNS? But wait, there's more! I also bought some 7 foot t-posts. Those are for the corners. The idea is to string fishing line, evenly spaced at about every 4 inches, up as high as I need to go to keep the leghorns in. If 7 footers don't work, I'll use tens. I did a test pen with 10 footers for a couple weeks. They tried to fly over a couple times, but the fishing line kind of freaked them out and none of them made it through. I finished one paddock today and......in fact... they DID fly over the first try with the 7 footers. As I tossed some mouldering straw in, one chook flipped out in that oh-so-special Leghorn way...UP UP and AWAY....she was outta there. What if I had put in 6' chicken wire and used 7 or 8' t-posts for each post? Just would have been money down the drain. I've read some posts about folks using fishing line to keep hawks out...anyone using it to keep chickens IN? How's it working for ya?