Magic Tricks May Fool You, but These Birds Can See Through Them
The New York Times
A small experiment using sleights of hand and illusions offers insights into how birds and people perceive the world.
The coin is in the illusionist’s left hand, now it’s in the right — or is it? Sleight of hand tricks are old standbys for magicians, street performers and people who’ve had a little too much to drink at parties. On humans, the deceptions work pretty well. But it turns out that birds don’t always fall for the same illusions. Researchers in a small study published on Monday in the Proceedings of the National Academy of Sciences reported on Eurasian jays, birds whose intelligence has long been studied by comparative psychologists. The jays were not fooled, at least by tricks that rely on the viewer having certain expectations about how human hands work. However, they were fooled by another kind of trick, perhaps because of how their visual system is built.
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