There around 9 domestic ducks and geese that are fed: 4 white Embden geese, 4 white mix breed geese and one Swedish Blue duck. When snow covers the green spaces, the ducks need their food delivered. We use volunteers to set up plastic corn troughs daily, wait 10 minutes, and then return the troughs. This way we don't get rats or other rodents around the pond and we keep the domestic ducks who can not fly well cared for during the winter.
The wild ducks are not fed. This includes the brown female mallards, the green headed male mallards, and the Canada geese. They need to keep their wildness by foraging for natural foods. They also need to teach their young how to survive and if they are given food they will lose their ability to find food naturally. Also, if they are fed, they will start bringing more and more relatives to the pond, which would make it unhealthy for both the animals living there, and the people visiting.