All great points. . I know lots of people do keep ducks and chickens together but I don't think it works out well for most.
My thinking is that if the duck is actually EATING the feathers after it pulls them out though there could still be a dietary issue :hmm
:goodpost:I also believe ducks have pretty different nutritional needs than chickens so it may well be that the duck is lacking in protein or something Else that could be making it want to do this.