The Incredulous New Caledonian Crows
10,000 Birds
SEPTEMBER 18, 2012
Capuchin monkeys, macaques, Cotton Top Tamarins, Chimpanzees, and many other animals, including various birds, have been investigated and found to be unable to make inferences about HCAs. The next graph shows the average number of times per trial that the crow decided to abandon an effort to get at the food.
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