I have been giving my all my ducklings brewer's yeast for the past 5 days after reading on here that they need the extra niacin. Today while walking to the pond one of the rouens started to limp ..then couldn't walk at all. He's kind of walks on the legs flat ..if that makes any sense. I have a pic too. His tail looks off centered like he twisted himself. If anyone has any suggestion of what to do,I would really appreciate it. Don't know if his leg/s are broken or if he's pulled something or what???
Sorry really bad pic

Sorry really bad pic