That's amazing I didn't think there was any place in the whole country free from predators.Nope! Our whole 6 acre farm is fenced and has pastures, and occasionally a possum comes under the gate, but the orchard is completely fenced.
I have 18 chickens and 17 waterfowl I clean poop out everyday.
About the only way to keep anything completely safe here is to pen them up I chose not to my birds would not be happy. I do have fencing around their area. just doesn't keep the hawks out.