I have a pekin duck who is only 1 yr and 4 months old. She has been showing all of these symptoms mentioned above, plus some - for about a week now. We took her to the vet on the 3rd day. He did several tests, and the only thing we could find was that her entire instestinal track was extremely swollen and bloated. However, there were no foreign objects in her body. She had not been laying for this entire time, so I initially had taken her to the vet because I assumed she was just egg bound, despite the oyster shells and vitamins I mix in with the flocks food. I also have been giving her charcoal, as I have another duck with similar issues that recovered to a stable condition after charcoal treatments (however, she still has issues walking as her legs are now bowed inward.) The vet gave me some antibiotics to try, and if they do not work, we are to put her down. We live in lower Alabama, and he mentioned that it is highly likely she has some sort of bacterial infection causing her stomach to swell/ become filled with gas due to toxins. However, she is eating (somewhat) and drinking water and having normal bowel movements. She just cannot balance on her own. If I hold her up she can stand but as soon as she tries to take a step, she falls. I think this is somewhat an improvement though, because the first day she did not even try to stand on her own, but today she has tried several times. I suppose the only way to know if the antibiotics are truly working would be to do another test, but they ar expensive. The vet also suggested if she does pass that we send her body to a local lab that can run tests and find out exactly what the two ducks have. I did not think the two illnesses were related, because the first duck got sick over a long period of time while this one has been a matter of days. I am going to the store to try honey and yogurt and see if she will take that. We also have been giving her epsom salt baths. I guess now it is just a waiting game :/ could you tell me how long your duck was sick for?