BC Conservation Data Centre: Conservation Status Report
Cardellina pusilla
Wilson's Warbler
| Scientific Name: | Cardellina pusilla |
|---|---|
| Scientific Name Synonyms: |
Wilsonia pusilla
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| English Name: | Wilson's Warbler |
| Provincial Status Summary | |
| Status: | S5B |
| Date Status Assigned: | April 21, 2015 |
| Date Last Reviewed: | March 05, 2015 |
| Reasons: | Large breeding range and population, relatively stable short-term trend.. |
| Range | |
| Range Extent: | G = 200,000-2,500,000 square km |
| Range Extent Estimate (km2): | 951,301 |
| Occurrences & Population | |
| Number of Occurrences: | E = > 300 |
| Number of Occurrences with Good Viability / Ecological Integrity: | Rank Factor not assessed |
| Number of Occurrences Appropriately Protected & Managed: | Rank Factor not assessed |
| Population Size: | Rank Factor not assessed |
| Threats (to population, occurrences, or area affected) | |
| Degree of Threat: | Rank Factor not assessed |
| Trend (in population, range, area occupied, and/or condition of occurrences) | |
| Short-Term Trend: | Rank Factor not assessed |
| Comments: |
***34% decline over 10 yrs (4.1% PA 1986-2006; Downes and Collins 2007).*** comments added ACT 2007-11-30 ##Despite its widespread distribution in the province, this species isn't very well covered by either the CBC or BBS, and thus trend estimates aren't very reliable at the BCR scale. Medium-term trends at the scale of the province suggest a strong decline over the last four decades (BBS 1973-2009: -3.2%/yr [-5.6,-0.8]), similar in magnitude to the decline occurring across Canada (-2.2%/yr [-3.4,-0.9]), but more recent trends are much less certain, and may even support some stability or increase in numbers in some areas.## (Anna Calvert; March 2011) |
| Long-Term Trend: | Rank Factor not assessed |
| Other Factors | |
| Intrinsic Vulnerability: | Rank Factor not assessed |
| Environmental Specificity: | Rank Factor not assessed |
| Other Rank Considerations: | |
| Information Gaps | |
| Research Needs: | |
| Inventory Needs: | |
| Stewardship | |
| Protection: | |
| Management: | |
| Version | |
| Author: | Ramsay, L.R. and B. Niedzielski |
| Date: | January 28, 2015 |
| References | |
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Downes, C.M., and B.T. Collins. 2007. Canadian Bird Trends Web site Version 2.2. Canadian Wildlife Service, Environment Canada, Gatineau, Quebec, K1A 0H3.
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Please visit the website Conservation Status Ranks for information on how the CDC determines conservation status ranks. For global conservation status reports and ranks, please visit the NatureServe website http://www.natureserve.org/.
Suggested Citation:
B.C. Conservation Data Centre. 2015. Conservation Status Report: Cardellina pusilla. B.C. Minist. of Environment. Available: https://a100.gov.bc.ca/pub/eswp/ (accessed Mar 27, 2026).