I'm considering fencing in my 1.1 acre yard with a split rail fence [three rails] and was contemplating if this would work out for ducks. The ducks I'm considering are Khaki Campbell or Cayuga. Still weighing in on that. I'm wondering though, what the minimum height would be to discourage them from jumping through. What I'm considering is this. The bottom of which would be a hardware cloth or similar style of metal fencing which would be stapled to the inside to keep them from blatantly walking under. The very top of the bottom rail would be no less than 18" off the ground. If that's not high enough, the second rail would be 36" to the top, however I do NOT want to have wire that high, at all. Thoughts? Input? Inquiring mind.