Knighstar679
Crowing
If you have a tsc near you you could look into nutrena nature wise all flock or it has 189 mg/kg niacin in it. It helped my guys a lot when I had Rouens. I only mentioned it because you mentioned looking for a duck feed. While it’s not a feed listed specially for ducks the niacin content is perfect for them. And it could be fed to everyone.