They survived for millions of years but not much longer
Collapsing bird numbers in North America
Study using citizen data finds three-quarters of nearly 500 species in decline, with steepest trend in areas where they once thrived
www.theguardian.com/environment/...
theguardian.com
Collapsing bird numbers in North America prompt fears of ecological crisis – research
Study using citizen data finds three-quarters of nearly 500 species in decline, with steepest trend in areas where they once thrived
