Hi all! I had a Muscovy duck that suddenly passed away yesterday. She was only 2 years old and was a small duck. I was hoping to get some guesses on her death. Yesterday morning we were feeding everyone when I noticed she was sitting by the coop breathing heavily and flapping her wings. We walked over to her and picked her up, she then stopped flapping her wings and the heavy breathing went on. She started to close her eyes and around ten seconds later she was dead. We were shocked about this because the day before she was fine. My guess is a heart attack?? If anyone has a guess to what this could be let me know! Thank you