Starting yesterday I noticed that one of my ducks abdomen was hanging down, and I initially though she might be egg bound because I noticed her sitting down more than the others. It looked sort of like an egg shaped lump too. I gave her a warm soak and tried to feel the area a little bit, but I didn't feel anything hard. If it were an egg would I be able to feel it? Now I'm worried it's something a lot more serious, like water belly. I've noticed the same thing now in another duck and one of my drakes and I'm extremely worried. Because I have a mix of drakes and hens I have them all on grower and I give oyster shell on the side, but when I looked up the causes of water belly it said one was high protein feed. Their feed is 19 percent protein, when I was doing research everything I saw said that should be okay but now I'm worried I've really hurt them. They've only been eating it for a few months, would that be enough time for protein to build up and damage their organs/cause water belly? I was only feeding it to them because I read that excess calcium can really hurt the drakes, but it seems like I might've caused something a lot worse. Coincidentally, my hens aren't laying pretty much at all right now, so I don't even think they're eating the oyster shell like they're supposed to. So it seems like everything is going wrong. I'm planning to switch them back onto layer as soon as possible because now I'm worried about the water belly and possible egg binding. Here are some pictures, it was hard to get a good one because they don't stop moving.