Potato salad for poultry

It is often a losing battle to keep the poultry off our vegetables. We don't grow many on our main allotment as the hens in particular often mount raids to get at the greens. I recently put chicken wire around a bed of potatoes. It kept them at bay for a couple of weeks but then they were able to break through. The potato plants came off badly. I've put a cage over them now. This at least seems to be working. The hens will have to get their salads from elsewhere.