As waterfowl have so many feathers, you want to pluck them when it is the easiest to get them all out. This is when the feathers are all mature and there are no pin (or immature) feathers. For ducks this is at about 7, 12.5 or 18 weeks of age. For geese it is normally at 9, 15 or 20 weeks of age. If you try to process between these "windows of opportunity" you will encounter large numbers of pin feathers that may double or triple your processing time and effort.