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Otherअध्यात्मक्राइमटॉप न्यूज़दुर्घटनाबड़ी-खबरबिचारबिडियोब्रे़किंग न्यूज़मनोरंजनराजनीतिशिक्षासंपादकीय

Parrots get probability, use stats to make choices

The birds — Blofeld, Bruce, Loki, Neo, Plankton and Taz — were trained to associate black tokens with a food reward and orange pegs with none.
During early tests, they used their beaks to pick up the black tokens and were given a treat.
The researchers then displayed the pegs in clear jars, with differing ratios of black and orange, picked up one token from each and concealed them in their palms, before offering them to the birds.
The kea preferred tokens from the jars that had a relatively higher proportion of black to orange tokens, showing that they were playing the percentages.
In addition, the kea showed a clear preference towards researchers who had previously demonstrated a “bias” towards picking more black tokens than orange.
“We always knew that they seemed quite intelligent, so we weren’t too surprised to find that they could understand probabilities,” said Amalia Bastos, research assistant at the University of Auckland’s School of Psychology.
“What was most surprising is that they can integrate social or physical information into their probabilistic judgements,” she told AFP.
Bastos and her research team aren’t currently sure what evolutionary advantage is bestowed by the ability to recognise probability.
But the trait was long thought to be the reserve of intelligent primates and humans, and shows the kea and possibly its relatives may not be so bird-brained, after all.
“Kea have the boldest personalities of all the bird species I have ever met,” said Bastos.


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