b41e59cb-54d1-4f04-9cc3-8c62484b25d3 eng; CAN Environment and Climate Change Canada Donnees-SIG_SCF_NOR-Data-GIS_CWS_NOR@ec.gc.ca 2026-09-18T11:49:23.251999409Z ISO 19115:2003 - Geographic information - Metadata ISO 19139 North American Aerial Trumpeter Swan Survey for Yukon and northern British Columbia (1990 – 2015) 2026-01-13T16:31:04 2026-01-13T16:41:04 Environment and Climate Change Canada The abundance and distribution of Trumpeter Swan populations were assessed at five-year intervals with the North American Trumpeter Swan Survey. Aerial surveys, using either fixed-wing or helicopter, were conducted using the 1:50,000 topographic map grid in July - September 1990 – 2015 in the Yukon and northern British Columbia. Survey maps were selected using a stratified random sampling scheme starting in 1995 for the Yukon and 2010 in parts of BC based on the number of swans expected to occur in any map (buffer = 0 swans, low maps = 1-10 swans, medium = 11 – 49 swans, high = 50+ swans). Total counts of number of adult swans and their social status: single, paired, brood-rearing or flocked (non-breeding) and number of cygnets per brood was recorded. Surveys have been conducted in the Yukon, British Columbia, Alberta and the Northwest Territories. This project summarizes data from British Columbia and the Yukon between 1990 – 2015. Data for Alberta and the Northwest Territories will be published separately on the Government of Canada Open Data Portal. See metadata download for more details. CWS-North DatasetID 070_4 https://geo.abds.is/geonetwork/srv/api/records/b41e59cb-54d1-4f04-9cc3-8c62484b25d3/attachments/open-canada_data.jpg Birds Northern Canada Trumpeter Swan breeding bird aerial survey Open Government Licence - Canada (https://open.canada.ca/en/open-government-licence-canada) eng; CAN biota -141.003 -52.6174 41.6755 83.1139 CSV unknown HTML unknown TXT unknown XLSX unknown unknown unknown https://data-donnees.az.ec.gc.ca/data/species/assess/North-American-Aerial-Trumpeter-Swan-Survey-for-Yukon-and-northern-British-Columbia-%281990%20%E2%80%93%202015%29?lang=en HTTPS View ECCC Data Mart (English) https://data-donnees.az.ec.gc.ca/api/file?path=%2Fspecies%2Fassess%2FNorth-American-Aerial-Trumpeter-Swan-Survey-for-Yukon-and-northern-British-Columbia-%281990%20%E2%80%93%202015%29%2FTRUS_Surveys_BC_YT_Metadata_M%C3%A9tadonn%C3%A9es.txt HTTPS TRUS_Surveys_BC_YT_Metadata_Métadonnées.txt https://data-donnees.az.ec.gc.ca/api/file?path=%2Fspecies%2Fassess%2FNorth-American-Aerial-Trumpeter-Swan-Survey-for-Yukon-and-northern-British-Columbia-%281990%20%E2%80%93%202015%29%2FTRUS_Surveys_BC_YT_1990_to_2015.gdb.zip HTTPS TRUS_Surveys_BC_YT_1990_to_2015.gdb.zip https://data-donnees.az.ec.gc.ca/api/file?path=%2Fspecies%2Fassess%2FNorth-American-Aerial-Trumpeter-Swan-Survey-for-Yukon-and-northern-British-Columbia-%281990%20%E2%80%93%202015%29%2FTRUS_Surveys_BC_YT_Data_Donn%C3%A9es.csv HTTPS TRUS_Surveys_BC_YT_Data_Données.csv https://data-donnees.az.ec.gc.ca/api/file?path=%2Fspecies%2Fassess%2FNorth-American-Aerial-Trumpeter-Swan-Survey-for-Yukon-and-northern-British-Columbia-%281990%20%E2%80%93%202015%29%2FTRUS_Surveys_BC_YT_Data_Donn%C3%A9es_BMDE.csv HTTPS TRUS_Surveys_BC_YT_Data_Données_BMDE.csv https://data-donnees.az.ec.gc.ca/api/file?path=%2Fspecies%2Fassess%2FNorth-American-Aerial-Trumpeter-Swan-Survey-for-Yukon-and-northern-British-Columbia-%281990%20%E2%80%93%202015%29%2FTRUS_Surveys_BC_YT_DataDictionary_DictionaireDeDonn%C3%A9es.xlsx HTTPS TRUS_Surveys_BC_YT_DataDictionary_DictionaireDeDonnées.xlsx https://open.canada.ca/data/en/dataset/b41e59cb-54d1-4f04-9cc3-8c62484b25d3 HTTPS Original metadata (open.canada.ca)