We have never used chicken wire for the above mentioned reasons. We have heavier-gauge chain link (not the cheapy chain link that some stores carry...some are smart) buried 6 inches with hardware cloth tie-wired to it. We had a canine dig up the chain link fence and BEND it upward at a "convenient" spot where 2 rolls of hardware cloth join at a seam (both sides tie wired together to the fence. The dog ripped through it and killed half of my flock.
We fixed the fence and now have the outside of the fence perimeter lined with cinder block filled with dirt.
