chickengarden, I have 2 Rouens, 2 Indian Runners, and 1 Pekin. (WH is on my wish list. Lol).
Sadie57, the wood I used is pressure treated. I know there are people who say not to use it with pets because they could ingest the chemicals but I don't see a duck nawing on it like a dog might. Lol. So my duck house shouldn't rot. I do plan to paint it and add tin to the roof and that should make it a little more weather resistant. I would put it near a pond if I had one. There are people with ducks that live kind of close to me and they have a pond. They use kid play houses for the ducks (those little tikes or preschool plastic houses). The houses are right on the bank of the pond. But I'd say as long as your duck house won't rot because of the water it should be fine.