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Parrots can make complex economic decisions, study shows

By Laerke Christensen, news reporter Parrots can make complex economic decisions, at least according to German scientists. 33 macaws and African grey parrots were taught to recognise the value of tokens which could be exchanged for food as part of the experiment at the Max Planck Institute in Germany. The birds then had to invest their tokens, either in low-value immediate rewards, or high-value but more expensive rewards. The most patient parrots could exchange their tokens for pieces of walnut…

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