I have a duck who hobbles. She has developed a minor deformity in one of her feet, with her center toe swollen and the outer toe curved inward. She has what appears to be a wart or growth on the center toe, as well. She appears to be the only bird in my flock with this issue. From my research, I have determined that this could be a diet deficiency, but I do not know what to feed to solve the potential manganese or thiamine issue. Any thoughts? The other option is that she cut her foot sometime back and I'm looking at an infection, but based on the leg and her limp, I'm sure it's not isolated to her foot. Thanks.