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Magpie can 'recognise reflection' | Magpie can 'recognise reflection' |
(about 4 hours later) | |
Magpies can recognise themselves in a mirror, scientists have found - the first time self-recognition has been observed in a non-mammal. | Magpies can recognise themselves in a mirror, scientists have found - the first time self-recognition has been observed in a non-mammal. |
Until relatively recently, humans were thought to be uniquely self-aware. | Until relatively recently, humans were thought to be uniquely self-aware. |
Scientists now know that most chimpanzees and orangutans can recognise their own reflections. | |
Some birds react when shown a mirror, but it is unclear if they know they are looking at their reflection, German experts wrote in Plos Biology journal. | Some birds react when shown a mirror, but it is unclear if they know they are looking at their reflection, German experts wrote in Plos Biology journal. |
Dr Helmut Prior, from the Goethe University in Frankfurt, and his colleagues carried out a series of tests on five hand-reared birds. | Dr Helmut Prior, from the Goethe University in Frankfurt, and his colleagues carried out a series of tests on five hand-reared birds. |
In one test, the researchers placed yellow and red stickers on the birds in positions where they could only be seen in a mirror. | In one test, the researchers placed yellow and red stickers on the birds in positions where they could only be seen in a mirror. |
On seeing their reflections, the magpies became focused on the stickers as they tried to reach them with their claws and beaks. | On seeing their reflections, the magpies became focused on the stickers as they tried to reach them with their claws and beaks. |
On several occasions, they succeeded in scratching the stickers off, which put an end to this behaviour. | On several occasions, they succeeded in scratching the stickers off, which put an end to this behaviour. |
Black stickers placed on the birds' bodies did not elicit the same response. | Black stickers placed on the birds' bodies did not elicit the same response. |
When no mirror was present, the magpies took no notice of the stickers. | When no mirror was present, the magpies took no notice of the stickers. |
"We do not claim that the findings demonstrate a level of self-consciousness or self-reflection typical of humans," the researchers wrote in Plos Biology. | "We do not claim that the findings demonstrate a level of self-consciousness or self-reflection typical of humans," the researchers wrote in Plos Biology. |
"The findings do, however, show that magpies respond in the mirror and mark test in a manner so far only clearly found in apes, and, at least suggestively, in dolphins and elephants. | "The findings do, however, show that magpies respond in the mirror and mark test in a manner so far only clearly found in apes, and, at least suggestively, in dolphins and elephants. |
"This is a remarkable capability that is at least a pre-requisite of self-recognition and might play a role in perspective taking." | "This is a remarkable capability that is at least a pre-requisite of self-recognition and might play a role in perspective taking." |
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