Archive: Marra Lab
15 Articles
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- In the Press
U.S., Canada have lost 3 billion birds since 1970. Scientists say ‘nature is unraveling.’
US and Canada have lost nearly 3 billion of bird population in last 50 years, according to Pete Marra, director of the Georgetown Environment. …
September 19, 2019
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- Scholarship
Decline of the North American avifauna
A 2019 article published in Science and co-authored by GEI director Peter Marra reports on widespread bird population declines across North. …
September 19, 2019
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- Scholarship
The impact of free-ranging domestic cats on wildlife of the United States
2013 Loss, Will, and Marra study suggests that free-ranging cats cause substantially greater wildlife mortality than previously thought and are likely the single greatest source…
January 29, 2013
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- Scholarship
Conserving migratory land birds in the New World: Do we know enough?
This 2010 study with co-author Peter Marra discusses the knowledge gaps in the study of annual bird. …
March 1, 2010
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- Scholarship
West Nile virus emergence and large-scale declines of North American bird populations
This 2007 article in Nature, coauthored by Dr. Marra, demonstrates the potential impacts of an invasive species on a diverse faunal assemblage across broad geographical scales,…
May 16, 2007