Global Warming

Climate Change is Killing Seabirds

The warming of the planet is taking a deadly toll on seabirds that are suffering population declines from starvation, inability to reproduce, heat waves and extreme weather.

Climate-related losses have hit albatrosses off the Hawaiian islands, northern gannets near the British Isles and puffins off the Maine coast. Some birds are less able to build nests and raise young as sea levels rise, while others are unable to find fish to eat as the ocean heats up, researchers have found.

Common murres and Cassin’s auklets that live off the West Coast have also died in large numbers from conditions scientists directly tied to global warming.

With less food, rising seas that encroach on islands where birds roost and increasingly frequent hurricanes that wipe away nests, many seabirds have been producing fewer chicks, researchers say.

And tern species that live off New England have died during increasing rain and hailstorms scientists link to climate change. Some species, including endangered roseate terns, also can’t fledge chicks because more frequent severe weather kills their young.

It’s difficult to precisely determine the population loss to wide-ranging seabirds and how much is attributable to climate change. But one estimate by researchers from University of British Columbia stated that seabird populations have fallen 70% since the mid-20th century.

Reproductive success also decreased over the last half century for fish-eating seabirds, especially those that live north of the equator, according to a study earlier this year in the journal Science.

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