We have an area next to our house and abutting our koi pond that I think would be ideal for just a few ducks, and I love the calls. I'm wondering how I would need to prepare the area. It's the off-side of the house, and there are no doors over there, but there are huge floor-to-ceiling windows overlooking the area from one room, so we'd be able to see the ducks' living area. What could I do to prepare an area so that it would be easy to keep relatively clean and presentable? I've got about 50 feet by 12 feet to play with, plus the pond. They could leave this area for free-ranging by day.