I bought 4 pet ducks at one week old. My hope was that I would have both male and female. Luck was not with me and I now know (from the green I'm starting to see on the head) that all 4 are males. I really love my ducks and don't want to give any away, but the house I built was only for 4! And I don't know if I have the space to have 8 ducks. What will happen if I don't get any females? Any advice or suggestions?