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The North American Breeding Bird Survey, Analysis Results 1966 - 2017

October 9, 2019

This data product consists of a database of population change and relative abundance estimates for North American birds, estimated from North American Breeding Bird Survey (BBS) data. Data are presented in 6 separate spreadsheets for 2 methods of trend summary and 3 time periods for 548 species of birds. Metadata for the BBS data used to produce these estimates is available from a USGS ftp site ( Metadata associated with this data product provides information specific to the analysis results.