My father has 6 foot by 6 foot dog pen with a gate. It is about 5 feet tall. It is cyclone fence. He also has an igloo dog house. He said if I dig it up I can have it. Would it work for the ducks? I could dig a place for a small kiddie pool. Also is it better to keep 2, 3, or 4 ducks? I don't what kind they are I hatached them fro eggs I bought on ebay and she said it was an assortmant. I don't know if they are males or females. Some are yellow with yellow beaks some are black with black beaks.