if a duck loses their oil glands due to injury or sicknessetc.a duck can easily drown. If they look like their sinking get them out right away! Males cause internal injuries and drowning especially if it's a deeper posted then they will did quicker...chris0117
it is probably a male. They hold the female down and drown the female. I just had 3 ducks die because of the males. Now I separated 3 males and ironically a hawk killed one. Not real happy but that's one less male that I have to watch I will miss him he was handsome.8