Duck and how good they are to eat is all dependent on what they are eating. To me rice fed ducks are the best. Corn fed aren’t bad. I know in the south I have heard they eat peanuts. I have never tried those.
Whole ducks are my favorite. Seasoned with salt and pepper inside and out and stuffed with yellow onions. Cooked on a bbq or smoker on high until juices run clear. Do not over cook. Crispy skin and rare inside. Good stuff.