Okay..Your welcome and I hope he recovers..Chickens really... this is only my second time raising ducks. These ducklings were from our first batch of ducks a year ago. The strange thing is that you mentioned the medicated feed.. the first ducklings we had, we used non medicated and all 12 survived perfectly. Thanks for telling me about flock feed or waterfowl feed. I will be sure to fuse that moving forward. Just another quick update, I took him from the pain and was able to hold him and a towel well my husband had the scrambled eggs in front of his face. He seemed to really hungry and started eating the scrambled eggs but in the next second he flung it out of his mouth. He also ate some of the broccoli and did the same thing almost like one Ducks test their food. Last night we added vitamins and electrolytes and their water in hopes of improving vitamin needs. Thanks for your reply on this I greatly appreciate it. I guess at this point if he doesn't want to eat or drink it's only a matter of time. I checked its gullet and didn't notice anything different from the other ducks.
Too much vitamin D is bad too. Hmm. Until you get the proper feed give them oatmeal with peas and egg. Cook the oatmeal first with the egg.
Glad you started the vitamins. Hope things get balanced soon..