New study finds U.S. and Canada have lost more than 1 in 4 birds in past 50 years

New study finds U.S. and Canada have lost more than 1 in 4 birds in past 50 years

New study finds U.S. and Canada have lost more than 1 in 4 birds in past 50 years

overall bird decrease infographic Birds have declined by 29% since 1970
More at https://www.nsf.gov/discoveries/disc_summ.jsp?cntn_id=299264&WT.mc_id=USNSF_1

This is a Research News item.

Read more at nsf.gov

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