I have nice large covered pens for my birds. I also have electric wires around the coops and pens and nothing has gotten past the hot wires. A few have tested them but once they do they don't test them again and I think the adult predator teach their young that whatever is on the other side of the hot wires aren't worth getting zapped for. I also have several cameras up. I have seen a lot of predators including coons. Good luck...