Description

Population trend estimates based on data collected through the North American Breeding Bird Survey (BBS), for approximately 300 Canadian bird species. The trend results are Canadian trends and thus use data from Canadian BBS routes only. Results are updated annually; these estimates use BBS data from 1970 through 2009. Trends are presented for species, provinces, territories, and Bird Conservation Regions (BCR) for which there are sufficient BBS data for statistical analysis.The estimates were generated using a maximum likelihood, annual index analysis, which differs from the analysis currently used to generate trend and annual index estimates. Trends are presented for species, provinces, territories and Bird Conservation Regions for which there are sufficient BBS data for statistical analysis. Trends and annual indices are also presented for groups of species (e.g., grassland birds). The BBS is jointly coordinated by Environment Canada and the U.S. Geological Survey (USGS), Patuxent Wildlife Research Center. Any use of these BBS results for Canada should acknowledge the hundreds of skilled volunteers in Canada who have participated in the BBS over the years and those who have served as provincial or territorial coordinators for the BBS. The most current estimates of BBS trends and annual indices can be found at: http://ec.gc.ca/ron-bbs/ General information on the BBS in Canada (e.g., the data collection methods, survey coverage, etc.) can be found at: http://ec.gc.ca/reom-mbs/

Resources

Name	Format	Description	Link
EC data mart	HTML		https://data-donnees.ec.gc.ca/data/species/assess/north-american-breeding-bird-survey-bbs-in-canada/north-american-breeding-bird-survey-population-trend-and-annual-indices-for-canada-data-version-2009/
BBS_annual_indices_for_groups_2009.txt	TXT		https://data-donnees.ec.gc.ca/data/species/assess/north-american-breeding-bird-survey-bbs-in-canada/north-american-breeding-bird-survey-population-trend-and-annual-indices-for-canada-data-version-2009/BBS_annual_indices_for_groups_2009.txt
BBS_annual_indices_for_species_2009.txt	TXT		https://data-donnees.ec.gc.ca/data/species/assess/north-american-breeding-bird-survey-bbs-in-canada/north-american-breeding-bird-survey-population-trend-and-annual-indices-for-canada-data-version-2009/BBS_annual_indices_for_species_2009.txt
BBS_trends_for_groups_2009.txt	TXT		https://data-donnees.ec.gc.ca/data/species/assess/north-american-breeding-bird-survey-bbs-in-canada/north-american-breeding-bird-survey-population-trend-and-annual-indices-for-canada-data-version-2009/BBS_trends_for_groups_2009.txt
BBS_trends_for_species_2009.txt	TXT		https://data-donnees.ec.gc.ca/data/species/assess/north-american-breeding-bird-survey-bbs-in-canada/north-american-breeding-bird-survey-population-trend-and-annual-indices-for-canada-data-version-2009/BBS_trends_for_species_2009.txt
Details_BBS_Indices_version_2009_En_Fr.docx	Doc		https://data-donnees.ec.gc.ca/data/species/assess/north-american-breeding-bird-survey-bbs-in-canada/north-american-breeding-bird-survey-population-trend-and-annual-indices-for-canada-data-version-2009/Details_BBS_Indices_version_2009_En_Fr.docx
Details_BBS_Trends_Donnes_version_2009_En_Fr.docx	Doc		https://data-donnees.ec.gc.ca/data/species/assess/north-american-breeding-bird-survey-bbs-in-canada/north-american-breeding-bird-survey-population-trend-and-annual-indices-for-canada-data-version-2009/Details_BBS_Trends_Donnes_version_2009_En_Fr.docx
EC data mart	HTML		https://data-donnees.ec.gc.ca/data/species/assess/north-american-breeding-bird-survey-bbs-in-canada/north-american-breeding-bird-survey-population-trend-and-annual-indices-for-canada-data-version-2009//?lang=fr

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