I used to raise ducks and fondly remember the fresh eggs I would get every morning. When I saw some for sale at the Super 88 Market in Malden, Massachusetts we purchased some. The eggs are quite a bit larger than a chicken egg but the taste is quite similar. To be honest the freshness of having your own eggs is the defining flavor more so than the type of bird. Having raised geese, ducks and guinea hens the size of the egg was the big difference not the taste.
Quite fresh from the Super 88 Market.