18 Sep '12, 4pm

Crows Can Reason About Cause and Effect

Crows Can Reason About Cause and Effect

Yet another brick pulled out of the wall separating humans from other animals: BBC Nature reports on some new research demonstrating that New Caledonian crows (not the type above, by the way) can think about cause and effect, and act based on that. In their experiment eight wild crows used tools to remove food from a box. Inside the enclosure there was a stick and the crows were tested in two separate series of events that both involved the stick moving. In one instance a human entered the hide and the stick moved. In the other, the stick still moved but no human entered. On the occasions when no human was observed entering the hide, the crows abandoned their efforts to probe for food using a tool more frequently than they did when a human had been observed. According to the scientists, the study proved that crows attributed the stick's movement to human presence. Beyond t...

Full article: http://www.treehugger.com/natural-sciences/crows-can-reas...

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