I have 10 ducks--5 drakes, 5 hens and 1 Toulouse goose and 1 brown Chinese goose. They free-range during the day and are all in the same pen at night. The ducks were just feathered out when I introduced them to the geese---the toulouse is a little older than the ducks, and the Chinese was about a year when introduced. It seemed like the geese "adopted" the ducklings (now 7 months old), and they lead them around, or call to them to get them to go where they want them to. It's really very sweet, especially as my toulouse was getting picked on severely by adult ducks and her own parents at the orig. owner's, and just seems to love the other goose and the ducks. Good luck with whatever you decide.