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This data product consists of a database of population change and abundance estimates for North American birds, estimated from North American Breeding Bird Survey (BBS) data. Data are presented for 548 species of birds in 4 spreadsheets containing trend estimates and annual indices for 2 time periods. Estimates are derived for each species using the 1 of 4 alternative models, and a cross-validation model selection procedure was used to select the best model for each species.
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This data product consists of a databases of population change and relative abundance estimates for North American birds, estimated from North American Breeding Bird Survey (BBS) data and produced yearly. Data are presented for ~548 species of birds in spreadsheets containing trend estimates and annual indices for 2 time periods.


    map background search result map search result map Hydrological measurements of 300 US temporary wetlands from 2004-2014 Hydrological measurements of 300 US temporary wetlands from 2004-2014