Ducks, geese and swans are all from the same avian group of species (Anatidae) and when well prepared are all equally tasty.
Geese due to their larger size and appetites are more expensive to process, they have less meat on then than you might think and the wings are bony as you would expect from a flying bird, and due to changing family arrangements many modern ovens in Western countries are too small to fit a decent sized goose into.
This is why the swans on the River Thames are supposed to belong to the Queen (apart from some in London which are supposed to belong to some other bunch of toffs) as it was to stop the common people eating them. when I used to live in Reading and did a fair amount of amfetamines, by midweek I’d be ravenously hungry and riding home from work (even after eating at lunchtime) I’d see a swan and be looking at it as if it were already a plucked and roasted bird (like a cat in a old style cartoon sometimes does).
In some European countries it (was?) allowed to eat swans but they are now on EU protected list.
