My 4 month old female mallard duck passed on the 9th and I'm not sure how she died.. not sure if it was because I accidentally sprayed her with perfume? The night before she was running around and happy but the next morning she wouldn't stand up. But she crawled... and I tried giving her water and she drank some but still would not stand. And a couple of hours she slowly left.. Anyone have any idea on how she could have passed?