My 2 12 week old ducks just started about 2 weeks ago with the really smelly and runny poo. They had never had it before and i have no idea what caused it. I have changed nothing diet wise and they have not been under any stress. My ducklings on the other hand are a week an a half old and for the past week their diarrea has also been getting worse. Thats all that they seem to have. Nothing more solid ever and it always smells so disgusting! Im not sure what the cause of this is or how to stop it or make it better. I did some research threw the BYC web site and all i found were threads of saying it was from stress or over drinking. No really cause or cure. They have not been stressed cause nothing has changed in their life and drinks as much as they always have. Can anyone help me out with this?