This morning when my stepdad got home from work at 6:30 am he went to check on the ducks and they were all fine, doing their thing. But when I got up at 11 and went to check on them, only the three ducklings were sitting on the porch, which is weird because Phil (10 weeks old) never leaves their side. I called her name and whistled but she didn't quack of come so I started to worry and checked in her usual places: under the tree, in the bush, under the trampoline but she wasn't there. I checked next to the porch and found her in her pool. But when I got close to her I realized her head was hung over the edge, her feet were back behind her, and she wasn't moving. I started to panic as I realized she was dead and ran inside to get my stepdad. He was completely shocked because he had just seen them a few hours earlier and they were all fine. I picked her up and held her for an hour, trying to figure out what had happened. She had plenty of food, fresh water, it didn't feel like her neck was broken, her stock seemed completely empty, and she isn't of laying age. Could she have eaten a bee and it stung her? Or a spider? Her neck didn't seem swollen. Nothing seemed in normal except that she was dead. There were no puncture marks or even signs of a struggle. It doesn't make sense if she was sick, she had been perfectly fine a few hours before. I'm very upset about this and I just want to know what happened to her. I have three other ducks and if something is a threat to their life I need to know.