A new study, published in BirdLife International's journal, Bird Conservation International, has revealed that the Northern Rockhopper Penguin Eudyptes moseleyi – which is principally found on UK territories in the South Atlantic – has declined by 90% over the last 50 years.

Historical records estimate that millions of penguins used to occur on Tristan da Cunha and Gough Island, but, declines (of more than 90%) have dramatically reduced their numbers in the last half century.

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