{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Jeffrey A. Hostetler", "hasEmail": "mailto:jhostetler@usgs.gov"}, "description": "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 546 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.   Metadata associated with this data product provides information specific to the associated analysis results; metadata for the BBS data are available at Ziolkowski, D.J., Lutmerding, M., English, W.B., Aponte, V.I., and Hudson, M-A.R., 2023, North American Breeding Bird Survey Dataset 1966 - 2023: U.S. Geological Survey data release, https://doi.org/10.5066/P136CRBV.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P1F2X4WH", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.67aba702d34e329fb20457b1.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_67aba702d34e329fb20457b1", "keyword": ["Bird Annual Indices", "Bird Lists", "Bird Trend Estimates", "Breeding Bird Survey", "Breeding Bird Survey Analysis", "Canada", "USGS:67aba702d34e329fb20457b1", "United States of America", "biota"], "modified": "2025-02-25T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-169.8047, 22.5937, -48.1641, 71.9654", "theme": ["geospatial"], "title": "The North American Breeding Bird Survey, Analysis Results 1966 - 2023"}