I think duck eggs taste better and it only takes one duck egg to equal two good sized chicken eggs. Per egg, duck eggs are higher in cholesterol, BUT, if you only eat one duck egg rather than two chicken eggs you come out with less cholesterol. When I bake, I find the duck eggs make a fluffier cake, the hold breading better, they hold meatloaf together really well, they make fantastic egg-drog soup too! They do have a stronger flavor so I don't recommend trying to eat more than one at a time, and I don't like them hard boiled at all; it's just too much egg, and the yolk doesn't cook as fast because it's thicker and sometimes it's runny and yucko!!
My ducks lay all the time unless I let them sit their clutch of eggs, then they stop. Well ok, my Runner stops,, Whitey just keeps on laying, she has 23 eggs in her nest I discovered tonight, she hid them under the straw! Hershey has 8 eggs, she's my Runner hen, and she's sitting now.