The Incredulous New Caledonian Crows
10,000 Birds
SEPTEMBER 18, 2012
For example, if we hear distant thunder, we know that it was caused by a storm, or by lightning, or by the more precisely defined physical processes of ionized air (depending on how much we know about meteorology). The next graph shows the average number of times per trial that the crow decided to abandon an effort to get at the food.
217 
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