It's always interesting to see very old stuff like this still able to operate. Archive: https://archive.today/CTc8h From the post: >>Keeping three clockwork motors, a fusee, a mainspring, and other delicate pieces of this Silver Swan automaton in mint condition takes precise work. Skilled clockmaker and conservator Matthew Read leads those efforts in this 2021 Bowes Museum video. The Silver Swan was smithed by James Cox, a London jeweler and 18th-century entrepreneur, and it first astonished crowds in 1773. But the magic of the life-size bird wouldn’t have been possible without its almost lifelike preening and feeding.