Scientists stunned as hundreds of ‘world’s smallest’ penguins mysteriously wash up dead

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In just the past few months, over 500 of the Eudyptula minor- also known as the world’s smallest penguins- have mysteriously washed up dead on beaches across New Zealand. Scientists are currently unsure about what’s behind the unexplained deaths of these creatures in such large numbers, although they suspect that climate change may be to blame. Since early May, these little penguins, also known as kororā, have been washing up on beaches on the country’s North Island.

The single largest cluster of deaths were reported on Ninety Mile Beach near Kaitaia, where 183 dead birds were discovered at the same time earlier this month.

This comes after another 109 birds were found dead on the same beach about a month ago, the Guardian reports.

Another cluster of around 100 dead penguins was also found on Cable Bay near Nelson, among other die-offs, according to the New Zealand’s Department of Conservation (DOC)

While the cause behind the deaths is not clear yet, scientists have noted that most of the dead penguins were significantly underweight.

Healthy Little penguins normally weight between 800 grams to 1 kilogram, while some of the bodies about half that figure.

Graeme Taylor, a DOC seabird scientist, told The Guardian: “There was just no body fat on them; there was hardly any muscle to show.
“When they get to that stage of emaciation, they can’t dive.”

This causes the birds to die of starvation or of hypothermia due to a lack of protective blubber, he added.

The DoC believes that Kororā are not starving because of overfishing but rather because climate change is warming the waters, making it too hot for the fish they feed on to survive.

Last year, the Earth saw the hottest ocean temperatures in recorded history, breaking the previous year’s record for the sixth year in a row.

New Zealand in particular has been hit with warmer temperatures as a prolonged cyclical event known as La Niña have created marine heatwaves.

As a result of warming waters, the small fish that act as food for the penguins swim lower to enjoy cooler temperatures, or leave the sea entirely.

Mr Taylor said: “This little species [of penguin] can dive down to 20 or 30 metres routinely, but it’s not that good at diving a lot deeper than that.”

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He noted that hot water temperatures through the winter had likely kept the fish out of reach of the penguins.

While the large-scale deaths of seabirds are not unheard of, Mr Taylor warned that these events are happening with greater frequency over the years.

He added: “As you start seeing it happen regularly like this, then there’s really not much chance for the birds to recover between the events, and rebuild the numbers again.”

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