Okay crazy update. I brought him into a nearby sanctuary that helps water birds, they said it didn't seem too deep and he should be fine. After, I went back to the park to check on the remaining ducklings and what I found was disturbing. There were 4 male ducks just going crazy trying to mate the mom duck stacking on top of her. I went over and pushed them off, but she was in very bad shape. She had her wings out and just pushing herself along with her wings, barely moving at all. I picked her up, and while walking to my car with her I saw one of the other ducklings with something wrong with its legs barely able to walk, but didn't seem to be in very bad condition like the mom. I brought them both to the sanctuary, fingers crossed they will be okay