I have a chicken tractor (just uploaded pics) currently housed inside a 50'x100' fenced run. We leave the tractor door open so the birds can hunt for bugs in the run and eat the grass. Problem is the hawks which like to help themselves to some of the tasty, uncooked Kentucky Colonel's treats.... I'm on a tight budget right now, but I DO have 5 10' fiberglass poles, 150 feet of wire and about 10 miles (only a *slight* exaggeration ... there's at least 2 miles on the spool) of nylon string. My idea is to install the poles vertically along the center of the 100' run, evenly spaced; then, string the wire from the front-to-back, fastening it to the top of each pole; and THEN, use the nylon string (tied to each side of the fence and going back-and-forth over the poles/wire) to make a "hawk-proof tent" over the entire run. (I just don't have the $400-$500 for netting right now.) What I don't know is the spacing needed between nylon-strings to prevent hawk swooping. Would 6 inch spacing work? 4 inch? Anybody know or have any input? Thanks! Bruce PS - I'm aware that I'd still have the "ends" of the "tent" open for possible intrusion, but I've got enough string to handle that, if it proves a problem! PPS - I already spent $1,400 on the fencing to protect our $40 worth of chickens from dogs .... HEY! Doesn't THAT qualify me for government work??