Hi Getreal, welcome to the Michigan thread
As Raz says, the moisture is likely to be an issue. You could try placing the waterer in a heavy rubber feeding tub, but having it outside would probably be better. Ducks and chickens often do not do well when housed together, as the ducks are much messier. If you could separate them they would likely both be happier and healthier. Ducks usually only require a modest shelter, such as a dog house or igloo.
As Raz says, the moisture is likely to be an issue. You could try placing the waterer in a heavy rubber feeding tub, but having it outside would probably be better. Ducks and chickens often do not do well when housed together, as the ducks are much messier. If you could separate them they would likely both be happier and healthier. Ducks usually only require a modest shelter, such as a dog house or igloo.