After the Peacock Clock video- thought I should paste this video of the Swan Automaton, by John-Joseph Merlin, who collaborated with John Cox.
I have not seen it 'in the flesh'- but as I understand it, the moving 'water' is spinning glass rods.
It gets wound up and operated once per day at the Bowe Museum.
(And as someone eruditely observed in the YouTube comments; "what? swans don t eat fish lol")