Geese/ducks and goat milk?

[DutchChic]

Hello....I've got Sebs, Amer. Buff and Amer. Blue goslings...as well as Runner ducklings. I raise dairy goats, and often feed my excess milk to my chickens. I'm new to waterfowl, and was wondering if it was alright to give goslings and ducklings goat milk, and if they will drink it? If not as babies, what about as adults? I don't want to offer them something that isn't good for them...especially after spending a month to hatch them..

Thanks!