I read through the threads about this issue but I'd still like some input. I have 4 older ducks, two mallards, one pekin and one buff. I've had three of them for almost 9 years. We have a relative coming here to live with three Muscovys, two female and one male. I have a large chainlink yard where my ducks are free to roam. We've discussed sectioning off the yard with hog panel until the ducks are at least a bit accustomed to each other. How long before they can be together? The weather here will be cold in a couple of months.