I have geese in NYS, and they have nor started to lay yet. They are starting to mate however. My Muscovy are laying.
I am interested in how your duckling/goslings do. Last year my Embden seemed pretty interested in brooding, eventually, but she and her sister only hatched three goslings from about 12 eggs, and then managed to kill two of those goslings within 2-3 days. I had better luck hatching their (earlier) eggs in an incubator and then bringing the goslings outside at about 2 weeks old. The adults did an excellent job of raising them. I did set the goslings in a wire pen for a few days to protect them from the adults. I have more adults this year, and will see what happens. In addition to their own eggs, I have bought a few goslings for them to raise from Metzer Farms.
I may try giving some goose eggs to one of my Muscovy hens to see if she will hatch them out.