Quantcast

One in Eight Bird Species Threatened With Extinction, Study Finds

Recently up-listed to 'Vulnerable,' the snowy owl's rapid decline is likely connected to climate change. Wikimedia Commons

A major global assessment of global bird populations paints a grim outlook for our feathered friends.

A new report from BirdLife International finds that 40 percent of the world's 11,000 bird species are in decline, with one in eight bird species now under some threat of extinction.


The State of the World's Birds 2018 report, which took five years to compile, even shows that a number of well-known birds, including the snowy owl, Atlantic puffin and the European turtle-dove, are now at risk of extinction.

The researchers note that the decline in global bird populations has been driven by human activity. According to the report, the expansion and intensification of agriculture impacts 1,091 (74 percent) of globally threatened birds.

For instance—the use of neonicotinoids, a controversial class of neurotoxic insecticides connected to widespread bee population declines—has also been linked to white-crowned sparrows losing a quarter of their body mass and fat stores and impairing their migratory orientation, one study found.

Logging, overexploitation, urbanization, pollution, disturbance and invasive species were also identified as drivers of the world's diminishing bird populations.

"The data are unequivocal. We are undergoing a steady and continuing deterioration in the status of the world's birds," Tris Allinson, BirdLife's Senior Global Science Officer and editor-in-chief of the report, said in a statement. "The threats driving the avian extinction crisis are many and varied, but invariably of humanity's making."

Notably, the report also identified human-induced climate change as one of the most serious long-term threats to birds. The iconic, once-widespread snowy owl—recently up-listed to "Vulnerable" on the International Union of Conservation of Nature Red List—has experienced rapid declines likely due to changes in snowmelt and snow cover affecting the availability and distribution of prey.

Similarly, sea birds such as Atlantic puffin and the black-legged kittiwake—both listed as Vulnerable to extinction—have also seen a depletion of fish due to overfishing and climate change.

As a press release for the report noted, this isn't just bad news for birds, it's also a warning for the planet as a whole: "Because birds are so widespread, being found in nearly every type of ecosystem, and one of the most studied groups of animals, they are excellent indicators of the state of the environment."

There is some good news in the report. Conservation interventions have saved at least 25 bird species threatened with extinction, the researchers found. The red-billed curassow, the pink pigeon of Mauritius and the black-faced spoonbill, which were each listed as Critically Endangered are now down-listed to Endangered.

The report outlines actions and changes to help birds, including restoration of habitats key to birds, eradicating and controlling invasive species and identifying the most vulnerable bird species in order to protect them.

"Although the report provides a sobering update on the state of birds and biodiversity, and of the challenges ahead, it also clearly demonstrates that solutions do exist and that significant, lasting success can be achieved" said Patricia Zurita, BirdLife's CEO.

The State of the World's Birds 2018 report

Sponsored
by [D.Jiang] / Moment / Getty Images

By Alena Kharlamenko

Tofu is a staple in vegetarian and vegan diets.

Read More Show Less
KarinaKnyspel / iStock / Getty Images

2018 saw a number of studies pointing to the outsized climate impact of meat consumption. Beef has long been singled out as particularly unsustainable: Cows both release the greenhouse gas methane into the atmosphere because of their digestive processes and require a lot of land area to raise. But for those unwilling to give up the taste and texture of a steak or burger, could lab-grown meat be a climate-friendly alternative? In a first-of-its-kind study, researchers from the Oxford Martin School set out to answer that question.

Read More Show Less
Sponsored
Three scissor-tailed flycatcher fledglings in a mesquite tree in Texas. Texas Eagle / CC BY-NC 2.0

By Gary Paul Nabhan

President Trump has declared a national emergency to fund a wall along our nation's southern border. The border wall issue has bitterly divided people across the U.S., becoming a vivid symbol of political deadlock.

Read More Show Less
PeopleImages / E+ / Getty Images

By Daniel Ross

Hurricane Florence, which battered the U.S. East Coast last September, left a trail of ruin and destruction estimated to cost between $17 billion and $22 billion. Some of the damage was all too visible—smashed homes and livelihoods. But other damage was less so, like the long-term environmental impacts in North Carolina from hog waste that spilled out over large open-air lagoons saturated in the rains.

Hog waste can contain potentially dangerous pathogens, pharmaceuticals and chemicals. According to the state's Department of Environmental Quality, as of early October nearly 100 such lagoons were damaged, breached or were very close to being so, the effluent from which can seep into waterways and drinking water supplies.

Read More Show Less
This picture taken on May 21, 2018 shows discarded climbing equipment and rubbish scattered around Camp 4 of Mount Everest. Decades of commercial mountaineering have turned Mount Everest into the world's highest rubbish dump as an increasing number of big-spending climbers pay little attention to the ugly footprint they leave behind. DOMA SHERPA / AFP / Getty Images

China has closed its Everest base camp to tourists because of a buildup of trash on the world's tallest mountain.

Read More Show Less