The coot is a referee:
The ducks initially swam away, but came back to watch. I think that might be little Troublemaker, the mallard.
The looser looked like he had swallowed some water and didn't look good the next few times I saw him.
In other news, Pumpkin is still missing, though Sissy has been doing very well. Pumpkin always had some kind of health issue and it's still possible that she passed away, though I thought I heard her quacking a month ago.