If they knew ahead of time what the crow would do, it's a demonstration. If they didn't know how it would behave, it's an experiment.
I'd say it's pretty likely they observed that crows had some kind of understanding of water displacement, and came up with a bunch of tests to see how far they could take it.
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u/DasNanda Dec 19 '19
Have you seen the video of the crow learning about the displacement of water? Humans smh