I have 8 female chickens and two female geese living together (sleeping in the same enclosed area and Free ranging together). I raised two female runner ducks (are now about 12weeks old) and have been keeping them in our backyard (completely separate) the ducks have never seen the geese\chickens. The ducks are getting a little much for our backyard and I would like to move them in with our other birds, how should I do this?