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State of the Birds Report

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Preserving Abundance

Birds that are abundant today can undergo a massive population collapse with surprising rapidity. Passenger Pigeon populations crashed from 2 to 3 billion birds to none in the wild in just 40 years. Keeping common birds common, while we still can, is as important as preventing extinctions of rare species.

Today there are 33 common bird species that do not meet Watch List criteria, yet are rapidly declining in many areas. These birds have lost more than half their global population. All of these species combined have lost hundreds of millions of breeding individuals over the past four decades.

Most common birds in steep decline fall within five categories that indicate larger environmental trends. Addressing the conservation needs of these birds will result in healthier, more productive lands and waters for other wildlife, as well as people.

Download the List of Common Birds in Steep Decline


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