No, your not. Search up "Duck acting drunk" or "Duck cant walk" or something similar on BYC and you will get a ton of threads.
Copy and pasted from Wiki: Botulism poisons the duck, causing what's sometimes known as "Limberneck Disease." It causes paralysis, starting with the duck having trouble...
:welcome
Ohh.......no that doesn't sound good. Poor duck.
Hmm, it actually could be a vitamin deficiency, some birds just get it. What diet are they on? I read that if you can find Poly-Vi-Sol (Perhaps at your feed store) put a few drops in his water, it could help. How often is he pooping...