I just re-read the OP's post and it started happening around the same age of duckling, I am feeding heaps of fresh peas, chopped sunflower seeds and dissolved marmite, so hopefully that gets the niacin levels up soon!
Hi, how did the niacin supplement go? I am curious because my 4 week old muscovy duckling started getting the same symptoms you described a week ago, and the mother rejected him/her. at first I thought it was an injury so kept it at rest, but instead of improving, it has got worse. I read on...