Annual frequency for IBA Boundary Bay - Roberts Bank - Sturgeon Bank (Fraser River Estuary)

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Data used on this page are considered provisional, have not necessarily been reviewed or edited, and may be subject to significant change. These data have been released for public interest only and do not represent an official list of birds for the IBA.

The following graphs provide the annual pattern of frequency (proportion of surveys where a species was detected) based on data associated with this IBA only. To view more advanced options as well as data from other projects, you can go to the NatureCounts data summary page.

Please note that these graphs do not necessarily reflect actual trends in the species population and may be subject to various reporting biases and changes in methodology along the years.

Datasets used in this page:

  • Breeding Bird Surveys (50 stops, Canada) (12 surveys)
  • British Columbia Breeding Bird Atlas (2008-2012): point count data (112 surveys)
  • British Columbia Breeding Bird Atlas (2008-2012): rare species and colonial data (110 surveys)
  • British Columbia Beached Birds Survey (621 surveys)
  • British Columbia Coastal Waterbirds Survey (1,786 surveys)
  • British Columbia Nocturnal Owls Survey (48 surveys)
  • Christmas Bird Counts (64 surveys)
  • EBird Canada (BC) (60,419 surveys)
  • EBird Canada (sensitive records) (16 surveys)
  • Great Backyard Bird Count (432 surveys)
  • Project Nestwatch (6,109 surveys)
  • Ontario Breeding Bird Atlas (2001-2005): point count data (5 surveys)
  • Project FeederWatch (Canada) (772 surveys)
  • This page is provided through a web service of NatureCounts, a web site hosted by Bird Studies Canada, a partner of the Avian Knowledge Network.
    The IBA Program is an international conservation initiative coordinated by BirdLife International. The Canadian co-partners for the IBA Program are Bird Studies Canada and Nature Canada.
       © Bird Studies Canada