My duck, Dreamcatcher, is a mascovie. Recently she has been really weak. Im not exactly sure if it's because of the recent weather from Oklahoma's notorious climate change, or if she's really sick. Her poop is watery, she eats and drinks, but when I hold her and place my arm under her feet, her grip is almost nonexistent. I read on one of the posts on here to try and use Purina's flock starter, and got some of that today. She's been iffy, so we have her in a large dog cage withy only other duck Soulpatch. During the day she stays inside by her self, because we believe that he isn't letting her rest or eat. Obvious signs? She's weak, and often falls down and can't get back up, resulting in me having to pick her up and carying her in. She eats, as I've mentioned. Her poop is watery. I don't know what could be wrong. I haven't tried niacin because I don't know what it does nor would I know how much to put in her water or food. Please help.