I've had chickens for about 4 years now. I have lost one to a water moccasin (just last week!). I have lost a few baby chicks that might have been able to squeeze through the chicken wire. I only have regular chicken wire on all my runs and coops. Did not bury any of the wire but do have everything set on 2x8 boards. I live in the country in the middle of a forest, on Toledo Bend Reservoir. I do have several dogs and cats that seem to keep most predators away. Right now, I have around 40 chickens, in all stages, from 3 week old chicks to some birds that are close to 4 years old! Over the 4 years, I've lost about 5 chickens that showed no signs of predator damage (other than the one last week). I'm pretty sure that the Brahma Rooster I lost last week was protecting his hens from the water moccasin. I also have a few ducks. Maybe I've just been lucky. My birds do not run free but remain in the coops, all the time. Too many domestic predators in the neighborhood to let them free range. I am in the process of constructing a large, common yard so they can move about a little more freely. All my coops have covers and I am planning to cover the larger yard to keep out overhead predators (Eagles, hawks, falcons and owls!). I know we have racoons and foxes in the neighborhood, but My dogs keep them at bay! I started out with around 7 chickens that were given to me. I tried the chicken wire on the first coop with no problems, so as I expanded, I kept to that theme. At the present, I have 5 different coops in place. Living here in the south, we don't worry much about cool weather, but I do have fans set up for the summer months. Taking care of my flock takes about 10 to 20 minutes a day. And some days, I do spend more time with them, handing out treats and checking their health and well being. What started as a hobby for my wife, has turned into my egg farm! Not showing ant profit yet, but closing in on paying for itself!