Antarctic penguin numbers rise

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The Adelie penguin population in Antarctica’s Ross Sea has boomed to a 30-year high.
New Zealand scientists based on the island have been tracking the Ross Sea population of the penguin since 1980.
The latest results show the population on Ross Island has steadily increased by about 6 per cent every year since 2001, despite signs that climate change is decreasing the population elsewhere at other points in Antarctica.
Current estimates have the number of breeding pairs up to one million.
Researchers were now trying to figure out why the population had increased after two decades of declining.
The Ross Sea population reached its lowest point in 2001, when giant icebergs arrived and altered the local sea ice and environmental conditions.
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