Global Warming Freezes Penguin Chicks
More rain related to a warming climate soaks Magellanic penguin chicks to the skin before their waterproof feathers grow in, killing them from hypothermia. Allie Wilkinson reports
By Allie Wilkinson
SUBSCRIBE TO 60-Second Earth
On supporting science journalism
If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.
Life isn’t easy for a penguin chick. There’s a lot to worry about: predators, having enough food, and now the changing climate.
Researchers spent nearly thirty years tracking chicks at Punta Tombo, the world’s largest colony of Magellanic penguins. They found that increased rainfall and extreme heat due to climate change are killing chicks. The study is in the journal PLoS ONE. [P. Dee Boersma and Ginger A. Rebstock, Climate Change Increases Reproductive Failure in Magellanic Penguins]
Down-covered chicks are too big to receive parental protection from the elements, but are not old enough to have grown protective waterproof feathers. So they get soaked to the skin during rainstorms and die of hypothermia. Their downy feathers do them a disservice during heat waves too, since they can't go for a swim to cool off until their waterproof feathers grow in.
Chicks not getting enough food are even more susceptible to the elements, as they lack the fuel to maintain their body temperature.
Storms during breeding season are already on the rise, and are expected to keep increasing. So climate change will likely pose a challenge not only in Magellanic penguins, but other seabirds as well. It’ll be sink or swim.
—Allie Wilkinson
[The above text is a transcript of this podcast.]
Subscribe to Support Independent Journalism
Great science journalism requires human expertise, time, effort and creativity. And it costs money. That’s why I and the journalists here at Scientific American hope you’ll join our community.
When you subscribe, you are supporting staff and freelance journalists who are passionate about telling science stories that are true, important and compelling. Our editors and reporters are often experts in their fields, which means they understand the nuances of big discoveries and can untangle the breakthroughs from the hype. With a subscription, you are also supporting rigorous fact-checking to ensure the words we publish are precise and accurate. And you’re supporting original illustrations, graphics and photos that bring you closer to an advanced laboratory, an ice sheet in Antarctica or a space mission in orbit. You’re helping us craft other types of high-quality journalism as well: Our newsletters are carefully written, edited and curated by staffers you have or will come to know and love. Our Science Quickly podcast is based on original reporting, collaboration with editors and scientists and exacting production.
Subscriptions keep this engine running so we can continue to deliver thoughtful, rigorous and independent science journalism to you. In an era of viral misinformation, this work is crucial. If you value what we do, I hope you’ll consider joining us as a subscriber
