My duck became lame over night, every evening I call for my ducks and they go into there kennel, always willingly, but 2 mornings ago one of my ducks could only hop on one leg. I read a post that ducks get worms and makes them lame. my ducks range from 1 to 2 years old. I bought some Wazine 17 today, now trying to figure out the safe way to give it to them, I have one male 3 healthy females and one lame female. I don't eat there eggs, I just enjoy having ducks. They are all Pekin except one blue swedish. I keep putting my lame duck in the bath tub to see if she will improve.