File:Audubon - Photo by Shari McCollough.jpg
Audubon_-_Photo_by_Shari_McCollough.jpg (795 × 559 pixels, file size: 76 KB, MIME type: image/jpeg)
More Than Half of U.S. Birds Are in Decline, Warns New Report
October 2022
The 2022 State of the Birds report is the first overall assessment of the nation’s birds since a 2019 Science study indicating the United States and Canada have lost more than 3 billion birds in the past 50 years.
“We're basically watching the process of the sixth mass extinction,” says Marra, who is a co-author of the 2019 paper.
North America Has Lost More Than 1 in 4 Birds in Last 50 Years
For the first time, researchers have estimated the volume of total avian loss in the Western Hemisphere—and it’s not just threatened species that are declining.
September 2019
Decline of the North American avifauna
September 2019
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:24, 14 October 2022 | | 795 × 559 (76 KB) | Siterunner (talk | contribs) |
You cannot overwrite this file.
File usage
The following 4 pages use this file:
