Tofino Mudflats Shorebird Surveys, British Columbia
These shorebird surveys are conducted intermittently at a series of sites near the town of Tofino on the west coast of Vancouver Island, British Columbia, during northward (April to May) and southward migration (July to November). This survey includes all shorebird species.
Surveyors used binoculars or a spotting scope to count the total number of shorebirds present within the natural boundaries of each survey site during the northward and/or southward migration periods. They used a boat to count birds within the entire area of Arakun Flats and Ducking Flats by traveling along the outer edge of the mudflats, and by stopping at standardized vantage points on land. They also used a boat to view as much area as possible within Maltby Slough, South Bay and Grice Bay from the openings to each of these bays. Surveyors walked the entire length of Chesterman Beach including the tombolo to Frank Island.
Surveys were done at least twice a week at each site. Most boat surveys began at low tide when the mudflats were exposed and continued on the rising tide. Road accessible sites were usually surveyed during the hour before high tide or at high tide in 2011. Surveys were not conducted in weather that reduced visibility or made boat travel unsafe (heavy rain or high wind).
Surveyors counted birds individually when they were within flocks of fewer than 200 birds. They estimated the size of larger flocks by counting 50 or 100 birds and then judged how many similar-sized groups made up the entire flock. Distant flocks were recorded as small or large shorebirds and assumed to have the same species composition as those closer to shore in 1995 or identified to species group and recorded as either “dowitchers” or “peeps” in 2011.
Basic view
Metadata Record Information
- File Identifier
- f040093d-9f8b-45c7-8fff-2b27dd84d97c XML
- Date Stamp
- 2021-07-02T14:35:26
- Metadata language
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eng; CAN
- Character set
- UTF8
- Hierarchy Level
- Series
http://ec.gc.ca
Data identification
- Date (Creation)
- 2011-10-08
- Date (Publication)
- 2011-10-08
- Status
- Completed
- Metadata language
-
eng; CAN
- Character set
- UTF8
- Topic category
-
- Biota
- Maintenance and Update Frequency
- As needed
- Spatial representation type
- Vector
Keywords
- Theme
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Tofino Mudflats
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Species
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Shorebird Migration
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Government of Canada Core Subject Thesaurus
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Birds
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ECCC Information Category EN
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Nature and Biodiversity - Habitat
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Business Functions
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Protect and Restore Species
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Protect Species Well-Being
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Geography
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British Columbia (BC)
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external.theme.EC_Branch
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Environmental Stewardship Branch
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external.theme.EC_Directorate
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Canadian Wildlife Service
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external.theme.EC_Program_PAA
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1.1.3. Migratory Birds
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external.theme.GC_Security_Level
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-
Unclassified
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- Use Limitation
-
Open Government Licence - Canada ( http://open.canada.ca/en/open-government-licence-canada )
- Access Constraints
- License
- Use Constraints
- License
- Begin Date
- 1988-04-18
- End Date
- 2011-10-08
Extent
))
Ref. system Reference Systems
- Reference system identifier
- EPSG / 4326 /
Distribution
Distribution Formats
- Distribution format
-
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Other
(
1.0
)
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Other
(
1.0
)
http://ec.gc.ca
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