First, I have 2 straight run African Geese. Second, I have one African Goose that is clearly bigger than the other one at 11 weeks old. Is the bigger one a male? They are acting both like Ganders. If both are Ganders, would I need to get a female? Would they abuse the duck females if they don't have mates? I probably coudn't get another female or two because my wife (and occasionally me) think 2 geese is more than enough.