This will be my 2nd winter with my chickens. I have an 8x8 coop that held 15 chickens last year. In December, I lost two birds in the run due to predators...the first was a fox that climbed the run (2x4 welded wire) and got inside and then two days later, a hawk killed another bird! The poor birds were pretty much on coop lockdown then as I couldn't be outside to babysit them This summer we installed an electric fence around the run, two strands about 2 foot high and then again at 4 foot high (it is a 6' fence). This should help deter the fox...now for the hawks! We are unable to use a solid roof on the run, and due to snow, the aviary netting I used this summer will be useless. I believe I once saw where someone made a 10" or so grid from fencing wire over the top of the run....anyone have any pictures? How useful has this been for the builder...any casualties? Thanks for your help!!