Executive Summary: https://www.stateofthebirds.org/2025/executive-summary/
5 Years After the 3 Billion Birds Lost Research, America Is Still Losing Birds
A 2019 study published in the journal Science sounded the alarm—showing a net loss of 3 billion birds in North America in the past 50 years. The 2025 State of the Birds report shows those losses are continuing, with declines among several bird trend indicators. Notably duck populations—a bright spot in past State of the Birds reports, with strong increases since 1970—have trended downward in recent years.
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