{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "U.S. Geological Survey, Alaska Science Center", "hasEmail": "mailto:gs-ak_asc_datamanagers@usgs.gov"}, "description": "These data describe an exercise in which known age and sex class of 100 Barrow\u2019s goldeneyes (Bucephala islandica), determined by expert examination bursa and plumage, was contrasted with age and sex classes estimated from photos by trained observers. ", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P92GRT3C", "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.ASC312.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_ASC312", "keyword": ["Age composition", "Alaska", "Animals/vertebrates", "Barrow's Goldeneye", "Biota", "Birds", "British Columbia", "Bucephala islandica", "Canada", "Ducks/geese/swans", "Environment", "Field sampling", "Indian Arm", "Migratory birds", "Plumage", "Population dynamics", "Prince William Sound", "Sexing (plants and animals)", "Stephens Passage", "Terrestrial ecosystems", "USGS:ASC312", "Waterfowl", "Wildlife biology"], "modified": "2025-04-28T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-149.25, 47.87, -122.08, 61.65", "theme": ["geospatial"], "title": "Data for Determining Age of Barrow's Goldeneye (Bucephala islandica) from External Characteristics, Alaska and Canada, 2007-2015"}