Hi I'm new to ducks and was wondering what might be wrong with my duckings. My two crested seem to be picking out their feathers but the Peking and Swedish seem fine. They're eating Dumor chick starter/grower and I thought that had niacin in it so what else could be wrong?

Good luck, I hope you can find some answers!
and Welcome To BYC! X3 on try the Ducks forum, good luck figuring out what is going on with the babies.