Natures wonders: More about Clever corvids (Introduction)

by David Turell @, Tuesday, July 29, 2014, 02:53 (1905 days ago) @ David Turell

They understand water volumes and dropping stones a la' Aesop's fable:

http://www.sciencedaily.com/releases/2014/07/140723180824.htm

Seven year old children get this but younger ones do not.


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