I just wanted to give an update! I ordered some colloidal silver spray and put it on this morning and tonight my black runner started quacking! I was so happy to hear her! I don't know if it was the worming or the spray that is working, but THANK YOU for the suggestion!
My chocolate runner was...
They are hanging in there. This is my first time with ducks so it's been a learning curve. I put them on a wormer. My chocolate runner has had a fast breathing rate, but seemed to slow down slightly since yesterday (which was the first day of worming). I didn't know that is something I should...