Ok we've had chicks for a year, so this year I bought baby ducks.. So we are cleaning a spot for them, even with a small pond. For thier house I was going to use an old dog house we have,(we've cleaned it and looks great) my question is it doesn't have a door to close it at night. My question is does it need a door or would it be ok with out? Any suggestion on what to use for a door? I'm thinking it would need a door from protection from the element... Any advice would be great.. I have plenty of time the ducks are only a week old... thanks everyone..