all I can say about the flavor is"nummy" ,couple times a year I stop at a little asian market/deli in little saigon in st paul minnesota,they roast "long island" ducks old school (one would swear he was in a da Nang village) hanging with a marinade bag sewed in the body caviety,tripe included you get the head and all for sucking the brains and eye balls out, I use they're dry rub on my duck/geese for bbq or oven cooking,peking rub is the best,but these farm raised ducks have great flavor,slight foul taste otherwise they would taste like chicken.
The taste cannot compare with a real duck in Vietnam that was raised in a rice patty/rice field fertilized with human $h!±.