same here, I get devastated if one of my birds go missing for a night or get ill.
But ducks are super hardy birds. So far I have never gotten a sick duck.
Given that they have food, water, and a warm place, they thrive nicely.
My ducks always chase each other around. If hes being targeted and chased 24/7 then thats an issue to resolve. But if hes just being chased a few times then its ok ig.
Stress indicators would be not eating, not drinking, etc.
If hes eating fine then its probably just moulting feathers. With...
he looks pretty healthy..
Do you let your birds bathe in a pool?
Its either that he cannot find a good place to bathe or hes just molting.
My pekins used to look like that but after their moult they were shining like pearls.
A moulting ducks' diet should be a slightly more nutritional...