Bird populations in the Amazon are declining without clear cause

Bird populations in the Amazon's Yasuní Biosphere Reserve have mysteriously dropped by half over 23 years, with climate change being a potential culprit.

Bernardo Araujo reports for Mongabay.


In short:

  • The number of birds in Ecuador's Yasuní Biosphere Reserve has halved, according to a recent study.
  • Researchers suspect climate change as the primary cause, despite the area being largely undisturbed by human activity.
  • Similar declines have been observed in other tropical regions, indicating a broader environmental issue.

Key quote:

“There’s something called the dawn chorus, which is typical in tropical forests where lots of birds sing just before dawn. And over the last 10 years, that has just been going quieter and quieter with very few birds singing in the morning.”

— John Blake, University of Florida professor

Why this matters:

This decline in bird populations, even in pristine habitats, is indicative of the far-reaching impacts of climate change, raising alarms about the future of biodiversity in tropical ecosystems. For more, read our series, Winged Warnings: What birds are telling us about our planet's health.

An overhead view of two rice and tofu bowls

Opinion: Plant-based diets can deliver climate and health benefits at the same time

Many choices we ask people make to help the climate don’t reveal immediate results, but we found that changing diets can have a climate benefit and quickly reduce some health risks.

A view of a prison yard

The ‘lionesses’ who sued to get air conditioning in every Texas prison — and won

A group led by formerly incarcerated women spent years advocating for those trapped inside prison walls during Texas’ hot summers.

Two people standing at voting booths filling out ballots
Credit: Ahmed/Unsplash+

Meet the Michigan climate candidate on Trump’s radar

Sunrise Movement co-founder William Lawrence’s toss-up congressional race has drawn progressives, data center critics and the president.

A view of smokestacks emitting smoke into the air

China keeps its overseas coal promise, but the demand continues

It has been five years since China promised the United Nations to stop funding overseas coal projects.
A view of a city street with cars and tall buildings

Trump administration plans to gut clean car rules

New fuel-economy standards, which President Trump said he finalized Saturday, would kill a federal effort to speed the transition to electric vehicles.
A field of green wheat stalks under a gray sky

British farmers saw ‘disappointing’ harvest and lower crop yields after hottest summer on record

Agriculture and Horticulture Development Board warned that the quality of the crops harvested has also been impacted.

A car's fuel gauge showing empty

How Trump is unintentionally helping the world’s climate

While the president remains a climate-change denier, the war with Iran has triggered an unforeseen benefit in the fight against global warming.
From our Newsroom
Multiple Houston-area oil and gas facilities that have violated pollution laws are seeking permit renewals

Multiple Houston-area oil and gas facilities that have violated pollution laws are seeking permit renewals

One facility has emitted cancer-causing chemicals into waterways at levels up to 520% higher than legal limits.

Regulators are underestimating health impacts from air pollution: Study

Regulators are underestimating health impacts from air pollution: Study

"The reality is, we are not exposed to one chemical at a time.”

Pennsylvania governor Josh Shapiro speaks with the state flag and American flag behind him.

Two years into his term, has Gov. Shapiro kept his promises to regulate Pennsylvania’s fracking industry?

A new report assesses the administration’s progress and makes new recommendations

silhouette of people holding hands by a lake at sunset

An open letter from EPA staff to the American public

“We cannot stand by and allow this to happen. We need to hold this administration accountable.”

wildfire retardants being sprayed by plane

New evidence links heavy metal pollution with wildfire retardants

“The chemical black box” that blankets wildfire-impacted areas is increasingly under scrutiny.

Stay informed: sign up for The Daily Climate newsletter
Top news on climate impacts, solutions, politics, drivers. Delivered to your inbox week days.