SYDNEY – They prefer freezing conditions but Antarctica’s emperor penguins may have struggled with the cold during the last ice age when temperatures cooled, a recent study suggested.
Researchers looking at how climatic changes have affected the highly cold-adapted penguin — the tallest and heaviest of all penguin species — over the past 30,000 years suggest that there were only three populations in the last ice age.
But as temperatures have warmed up since then, the species has flourished and there are now seven times more of the penguins in many more locations, joint lead researcher Jane Younger said.

http://www.japantimes.co.jp/news/2015/03/14/world/science-health-world/emperor-penguins-hit-hard-cold/#.VQyIZUvTGUd

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