Well, there are some things that electric netting won't keep out and apparently weasles are on that list. Found twenty of my young chickens dead this a.m. in their movable hay coop. We are trying to pasture them but have found very little on how to do that and keep the structure light weight or otherwise easy to move, and still rock solid predator wise. I read about hay houses, and people have been sucessful with them as long as they are surrounded by electric, so I thought they would most likely be okay. I am so broken hearted, there were a couple in there that were real pets. I am going to catch that thing and dispatch it to the otherside. Most of them were barely even touched, just killed. This is just depressing.