Loggerhead shrike COSEWIC assessment and status report: chapter 1
Assessment Summary
Assessment Summary – May 2004
Common name: Loggerhead Shrike excubitorides subspecies
Scientific name: Lanius Ludovicianus Excubitorides
Status: Threatened
Reason for designation: This raptorial songbird has suffered significant (more than 80%) population declines over the past 35 years. These declines have been linked to loss of native prairie and pastureland habitats and pesticide residues.
Occurrence: Alberta, Saskatchewan, Manitoba
Status history: This species was considered a single unit and assigned a status of Threatened in April 1986. Split according to subspecies in April 1991. The excubitorides subspecies retained the original Threatened designation from April 1986. Status re-examined and confirmed in May 2004. Last assessment based on an update status report.
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