The North American Breeding Bird Survey, Analysis Results
Summary
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.
Summary
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.