I'm still in the planning phase of duck ownership, and I feel like I have a thousand questions! We have a small pond on the property, and I had planned to build the duck house a little ways away, about halfway between my house and the pond. We've had a ton of rain this past week, and the other day I saw a pair of mallards, and the next day I saw a group of ten or so on the pond! I'd never seen them before, and haven't since. Do wild ducks pose a health risk to domestic ducks?