Aesop Fables: Perry Index 390 - with interesting experimental results:

Aesop Fables: Perry Index 390 - with interesting experimental results:
Crow & Pebbles (Pitcher or Jug) story showcases the importance of perseverance, and presence of mind.
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Is it just a story

(or)

Are crows smart enough to drink from a jug of water by adding pebbles?

See the video below -

This video captures that story with an interesting set of visuals with one extracted from a work done by Sarah Hilbert's team at Cambridge.

http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0092895
https://youtu.be/-kQRXSqd04w