Tool-making crows have the ability to "reason", say scientists.
In an experiment, researchers found that crows were more likely to forage when they could attribute changes in their environment to a human presence.
This behaviour may suggest "complex cognition", according to a study published in the Proceedings of the National Academy of Sciences.
Until now the ability to make inferences based on causes has been attributed to humans but not animals.
The study was a collaboration between researchers from the University of Auckland, New Zealand, the University of Cambridge, UK and the University of Vienna, Austria.
In their experiment eight wild crows used tools to remove food from a box.
Read on: http://www.bbc.co.uk/nature/19626912
In an experiment, researchers found that crows were more likely to forage when they could attribute changes in their environment to a human presence.
This behaviour may suggest "complex cognition", according to a study published in the Proceedings of the National Academy of Sciences.
Until now the ability to make inferences based on causes has been attributed to humans but not animals.
The study was a collaboration between researchers from the University of Auckland, New Zealand, the University of Cambridge, UK and the University of Vienna, Austria.
In their experiment eight wild crows used tools to remove food from a box.
Read on: http://www.bbc.co.uk/nature/19626912
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