Trends in Duck Breeding Populations, 1955-2009

http://www.fws.gov/migratorybirds/NewReportsPublications/PopulationStatus/Trends/Trend%20Report%202009.pdf

Summarizes information about the status of duck populations and wetland habitats during spring 2009. Estimates there are 42 millions, an increase of 13% over the 2008 estimate. Also provides historic data on duck breeding population estimates back to 1955. From the U.S. Fish and Wildlife Service.

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