I just found fox prints in my duck enclosure. Luckily I don't have ducks outside right now (they're still in the brooder) but I need a way to fox proof the pen before they go outside. Does anyone have creative solutions? I was thinking maybe planting black berries around the fences perimeter to deter them from climbing over but I don't know if that would work or not. Also, we lost last years flock to a hawk. Any ideas for that?