That's a great duck to have
one of my hybrid hens has layed an egg a day for 2 years now, I worry about her not having a short break but thank her every day for her egg as the other two the same age are hit and miss as to whether they will give an egg.
We are looking at getting more hens to keep us through next winter as we use lots of eggs weekly but I refuse to buy any when we have hens
You have a few money makers there with fresh duck eggs to sell through winters