I think you will find that the ducks will make a mess of your coop & it will be wet a lot. At least that is what a lot of people say. Its better to keep the ducks separate. Ducks need to be able to dunk their heads in water every day. They splash it around & make a mess....You could put the water bucket outside in the summer, but in the winter?
In the winter you could have a heated pool for them.
