The US and Canada have lost three billion birds since 1970

By Adam Vaughan

Michael Parr, American Fowl Conservancy

The US and Canada have lost nearly 3 billion birds since 1970 attributable to human activities, in a dramatic decline researchers are calling an “skipped over biodiversity disaster”.

This is the first time researchers have attempted to estimate the accurate inhabitants modifications in breeding birds there, and suggests that North The United States has seen more than a quarter of its birds proceed in most modern decades.

Kenneth Rosenberg of Cornell University …