We've got 4 ducks and only one has got something wrong with her feathers. she is kept in good conditions, although is exposed to mud a lot as British weather can take its toll on the grass. She's fed hens layers pellets along with the other 3 ducks so i don't think that's the problem. i just have no idea what it is and no idea how to help her! her wing basically look dry and brittle, and they look like the don't sit comfortably as she if forever adjusting herself.