“Astounded.” That’s the word applied conservation scientist Ken Rosenberg used to describe his team’s reaction to their study that’s tallied a massive loss of birds in the continental US and Canada. A paper published Thursday in the journal Science highlights a devastating statistic: a net loss of nearly 3 billion birds, or 29% of the total adult breeding population, since 1970. Rosenberg, of Cornell University, is lead author of the study.

 

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