If you are looking for tips on butchering, there is a great link on butchering chickens, at the link below, so if this is a duck it should almost be the same, although it is not for the faint of heart
The ducks take longer to pluck and you need to have the scalding water a bit hotter. About 160 degrees. Put a couple of drops of soap into the scald water. I use a cooking spoon to push the feathers up to get the water down to the skin.