{"id":6531,"date":"2019-09-20T11:28:08","date_gmt":"2019-09-20T09:28:08","guid":{"rendered":"https:\/\/www.sonnenseite.com\/environment\/nearly-30-of-birds-in-u-s-canada-have-vanished-since-1970.html"},"modified":"2019-09-20T11:28:08","modified_gmt":"2019-09-20T09:28:08","slug":"nearly-30-of-birds-in-u-s-canada-have-vanished-since-1970","status":"publish","type":"post","link":"https:\/\/www.sonnenseite.com\/en\/environment\/nearly-30-of-birds-in-u-s-canada-have-vanished-since-1970\/","title":{"rendered":"Nearly 30% of birds in U.S., Canada have vanished since 1970"},"content":{"rendered":"

If you were alive in 1970, more than 1 in 4 birds in the U.S. and Canada have disappeared within your lifetime. According to research published Sept. 19 by the journal Science, the total breeding bird population in the continental U.S. and Canada has dropped by 29 percent since that year.<\/p>\n

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“We were astounded by this result … the loss of billions of birds,” said the study’s lead author, Ken Rosenberg, an applied conservation scientist at the Cornell Lab of Ornithology<\/a> and a leader of research and planning on joint initiatives by the Lab and the American Bird Conservancy.<\/p>\n

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Rosenberg led a research team of scientists from seven institutions from the U.S. and Canada in the analysis of 529 bird species<\/a>. The team analyzed the most robust synthesis of long-term-monitoring population surveys ever assembled for a group of wildlife species; it also analyzed radar imagery.<\/p>\n

Rosenberg said the results of this study point to something bigger than birds.<\/p>\n

“It’s a strong signal that our human-altered landscapes are losing their ability to support birdlife,” he said. “And that is an indicator of a coming collapse of the overall environment.”<\/p>\n

All told, the U.S. and Canadian continental avifauna population is down by 2.9 billion breeding adult birds, with devastating losses among birds in every biome. Forests alone have lost 1 billion birds. Grassland bird populations collectively have declined by more than 50 percent, or another 700 million birds.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

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