Page last updated at 22:34 GMT, Friday, 27 June 2008 23:34 UK

Spotting penguin spots

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Scientists from Bristol University have developed new technology that can identify large numbers of African penguins.

First tested out on captive birds at Bristol zoo, it works by identifying the birds' unique markings.

Here, the computer is recognising an African penguin's chest outline, and is extracting and matching its spot pattern. It is able to tell that it has David the penguin in its sights.

Footage: Penguin Recognition Project

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