North America has lost nearly 3 billion birds since 1970, a study says. It found significant population declines among hundreds of bird species.

Scientists estimate there are 3 billion fewer birds in North America today than in 1970. Both common and rare birds are disappearing across nearly all habitats.

A study revealed there are 3 billion fewer birds in the U.S. and Canada than in 1970. Jose M. Osorio / Chicago Tribune A blackpoll warbler is spotted near the Peggy Notebaert Nature Museum on Sept ...

There are almost 3 billion fewer birds in the United States and Canada now than in 1970, according to a disturbing new study. That amounts to a 29 percent drop in the avian population over the ...

Over the last 50 years, the U.S. and Canada have slowly but surely lost 29% of their bird populations — amounting to nearly 3 billion birds. The shocking loss could be a sign of an ecological ...

Grassland birds had the greatest loss, with their population going down by 53 percent since 1970—more than 700 million fewer animals. “Grasslands really are the most threatened terrestrial ...

Over three billion birds, or 29% of 1970s abundance have been lost in North America over the last 50 years. To make these dismal determinations, scientists drew from multiple long-term bird monitoring ...

Northland favorite evening grosbeak part of a 29 percent decline in total birds across U.S. and Canada. Nearly 3 billion birds lost since 1970 - Duluth News Tribune | News, weather, and sports ...

WASHINGTON (AP) — North America’s skies are lonelier and quieter as nearly 3 billion fewer wild birds soar in the air than in 1970, a comprehensive study shows. The new study focuses on the ...

According to a well-documented study, we have lost some 3 billion birds since 1970. The situation is not improving despite our backyard generosity. A second die-off of wildlife is underway, as well.

They’ve lost 700 million individuals across 31 species, equivalent to a 53 percent population loss since 1970. Forest-dwelling birds, which are more abundant, lost one billion individuals.