Archive: Marra Lab
15 Articles
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- In the Press
Half of migratory bird species are declining globally, new study finds
The size of the world’s migratory bird populations is taking a nosedive, according to a new Nature study by scientists across four continents. Led by researchers from Georgetown…
July 24, 2026
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- Scholarship
Status, threats and conservation of Earth’s migratory birds
In this review, the authors discuss current trends, threats and conservation responses for migratory birds. The true status of Earth’s migratory birds remains uncertain as…
July 23, 2026
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- In the Press
More than half of Earth’s migratory bird species are declining – here’s how we can still save them
Dean Pete Marra authors a paper regarding how the science around migratory birds has changed dramatically over the past two decades, and how conservation can help save these…
July 22, 2026
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- University Stories
Bird Populations Are in Steep Decline Around the World. Here’s What Might Bring Birds Back.
A new study from Georgetown shows that more than half of all migratory bird species around the world are in decline. An ornithologist explains.…
July 22, 2026
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Climate Change, Policy in the Wake of Hurricanes Helene, Milton
“All of this is caused by the amount of greenhouse gasses we’re putting into the atmosphere,” Marra. …
November 8, 2024
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- In the Press
Op-Ed: Restoring Ecological Belonging – A Call to Heal Our Planet
Dean Peter Marra explores three vital mindset shifts needed to rekindle our ecological belonging and address the urgent climate crisis, offering insights into overcoming the…
April 8, 2024
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- In the Press
What are we gonna do about all these cats?
A question that has launched a battle between bird-loving ecologists and ardent, cat-defending activists. What should we do about an invasive species beloved by many Americans --…
February 12, 2024
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- In the Press
Scientists sound the alarm over dramatic loss of 3 billion birds in North America: ‘We’re watching … extinction happen’
Peter Marra, a conservation biologist and dean of Georgetown University’s Earth Commons Institute, and his colleagues studied multiple bird-monitoring datasets and found a…
July 13, 2023
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- In the Press
How to follow along on great spring bird migration
“The past 20 years have seen a true renaissance in different technologies to track bird migrations around the world at scales that haven’t been possible before,” said Peter, …
April 13, 2023
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- In the Press
It’s Time for a Flu Vaccine—for Birds
“The impact on wild bird populations is unprecedented,” says Peter Marra, an ornithologist and director of the Earth Commons Institute at Georgetown University. “Massive numbers…
March 8, 2023