I don't think so. She is the second one to show these symptoms. I think it's a secondary infection caused from a birth defect. The first (who unfortunately died yesterday) one had a very tiny, shriveled heart and nodules all over her lungs and intestines. These 2 ducklings both have/had tiny undeveloped wings, and have not grown as well as their siblings. It's something congenital. I'm guessing their hearts are too small to sustain their growing body, which would also weaken their immune system and make them more susceptible to secondary infections like Aspergillosis. :\ The other ducklings have nice, full wings, growing like weeds and are very active. When this one passes (or gets culled, whichever happens first) we'll open her up and see if she has a small heart, too. It's very sad. I probably sound heartless, but honestly I cried enough yesterday I have to kinda distance myself and think of her as just an animal as opposed to my baby duck. I really do love and care about my animals, even if it sounds like I'm letting them die and cutting them open. I hope I don't sound that way.