;-; uh oh
Not really an uh oh. I just haven't raised a ton of quackers. When I had ducks out in the country the moms raised them even though I checked them often I have never seen patches is all.
My one group in town was fed flock raiser with nutritional yeast added, zero scratch, romaine lettuce as a treat once adulthood was reached. My country ducks ate duck feed from the local mill.