I rescued two ducks two months ago. They came to me very beat up looking probably from too many males and lack of nutrition. The one of the two has blossomed almost a 100%. The other still looks really rough. Her feathers looks gunky, spotty, callaced, broken and just gross as awful as that is to say. We named her orphan anni due to her condition. All my other ducks are beautiful!!!! They are free ranged, feed organic grain, brewers yeast, diatamaceous earth, and veggies. They also have access to a pond and a kiddie poolcleaned daily. I attached some photos of her feathers. What can I do,to help her????