About a month ago, our duck seemed to have a broken leg. She couldn't walk at all, and it was very definitely one leg that was hurting. Although, we couldn't find a specific break or injury. She slowly got better and went from unable to walk, to an awful limp, to almost normal again. Then, a few days ago she was incapacitated again. This time it seems like neither leg is working. Could this be some kind of sickness? Or what could be going on? Now, after a few days with her just lying around pitifully (we thought she was going to die ), I finally got her some vitamins today. She gulped that down and then tried to walk. She can't, though, and we've spent the day putting her back in her bed after she flops around for a while.