A new study finds North American bird populations keep dropping, and that decline is accelerating for many species.

But with winters warming, even by a few degrees, apple trees will want to break dormancy earlier. Einhorn said, “Instead of being at 30 degrees Fahrenheit in the winter, maybe now the days are at 34 ...

WASHINGTON— A new study finds that billions fewer birds are flying through North America compared to a decade ago and populations are shrinking faster than ever, primarily because of high-intensity ...

WASHINGTON (AP) — Billions fewer birds are flying through North American skies than decades ago and their population is shrinking ever faster, mostly due to a combination of intensive agriculture and ...

Martina Otto is Head of Secretariat for the Climate and Clean Air Coalition (CCAC), convened by the United Nations Environment Programme (UNEP). Kaveh Zahedi is Director of the Office of Climate ...

Add Yahoo as a preferred source to see more of our stories on Google. Billions fewer birds are flying through North American skies than decades ago and their population is shrinking ever faster, ...