Don't know what to do with this little guy. He is a 4 1/2 week old Australian Spotted that has been viciously going after the other ducklings new wing feathers and eating them. I have seperated him from the flock because he has bloodied five of the others, but I don't want him/her freaking out all alone either. My plan is to put him back with the others as soon as the feathers have finished comming in. Is there anything that I can put on the wings of the others to discourage this? Edit to add that I have PICK-NO-MORE that I bought for chickens, does this work on ducks?