That actually sounds some what similar to what's happening to one of my baby ducks I purchased from TSC. That's what caught my attention about your post. I only have 4 & mine where purchased just for pets, but.. They are just now 3 weeks old, I as well feed mine the starter. & about a week ago...
I recently got 4 baby pecan ducks. They are 3 weeks old this weekend. I was told they where all the same age. (Purchased from TSC) however, the one that was just a bit smaller has seemed to maybe be have developmental issues with his legs/& walking properly. Instead of standing upright, he's...