Sorry for being silent for so long. I was not sure what I could say. A predator managed to get about half of my ducks, and the rest pretty much stopped laying. There was one community nest that a duck started setting and then managed to ruin it. I put the eggs into an incubator, but very few survived.
Now, the predator situation is partially resolved, and the ducks are starting to lay again. A few days ago I found a nest of 7 duck eggs that a banty hen is setting so I will see how those develop. And this morning there were 4 nice eggs in a nest.
So I feel confident I can now follow through properly with this swap. I will offer the 4 + what is available muscovy duck eggs. The geese have stopped laying. I really do not think they will start again now after the predator situation and this late in the spring.