lunedì 29 febbraio 2016

NYT Science: Crows Clever Enough to Learn a Shell Game

Crows Clever Enough to Learn a Shell Game
By JAMES GORMAN

New Caledonian crows had trouble finding food moved from one bowl to another, until they were trained to watch hands.

Published: February 29, 2016 at 06:00AM

via NYT Science http://ift.tt/1LpMvV7