I had a few Muscovy ducks in the past, but this one got me worry. It is almost 10 weeks old and the wing feathers are barley growing. There is a lot of fuzz on the wings still, but feathers grew out everywhere else on the body. The few Muscovy ducks I had in the past, the wing feathers seem to be all grow out at 8 weeks. I am starting to get worry and wonder if they would ever grow out and have normal fully feathered wings.