Authorization

North America has lost nearly 3 billion birds in the last 50 years a?? another sign that we're in the middle of a 6th mass extinction

North America has lost nearly 3 billion birds in the last 50 years a?? another sign that we're in the middle of a 6th mass extinction
Matthew Pendleton, Macaulay Library at Cornell Lab of Ornithology



Nearly 3 billion birds have disappeared across the US and Canada since 1970.




A new study found that there has been a 29% decline in bird populations over the last 48 years.




The scientists point to agriculture practices, pesticides, and habitat loss as the primary culprits for these declines.




The finding is another data point in an ominous trend that suggests the Earth is in the middle of a 6th mass extinction.




Visit Business Insider's homepage for more stories.



There are 2.9 billion (yes, that's billion with a B) fewer birds on the North American continent today than there were 50 years ago.
In a study published today in the journal Science, researchers report that hundreds of North American bird populations — from songbirds like meadowlarks to backyard favorites like sparrows — are thinning. Overall, the analysis suggests, we've seen a 29% decline.
"We expected to see continuing declines of threatened species. But for the first time, the results also showed pervasive losses among common birds across all habitats, including backyard birds," Kenneth Rosenberg, the lead author of the study, said in a press release.
See also:
Leave a comment
News
  • Latest
  • Read
  • Commented
Calendar Content
«    Октябрь 2019    »
ПнВтСрЧтПтСбВс
 123456
78910111213
14151617181920
21222324252627
28293031