The outside fence is a hugel bed with a
swale on the inside, say 3-4 ft deep with a 5-6ft tall, steep bed above/outside. I think this would keep the birds inside. The
land peaks in the middle so a swale would keep the birds in, collect snow/water and run cold air off the soil....
The paddock dividing beds would just be as steep as possible. Each paddock would have plenty of foraging foods, insect habitat. Im hoping they wont feel a need to skip town.