If you think that crow is giving you the evil eye…


WILD crows can recognise individual human faces and hold a grudge for years against people who have treated them badly. This ability – which may also exist in other wild animals – highlights how carefully some animals monitor the humans with whom they share living space. Field biologists have observed that crows seem to recognise them, but it was unclear whether the birds distinguish people by their faces or by other distinctive features of dress, gait or behaviour. To find out,
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