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Populations of the Loggerhead Shrike (lanius ludovicianus) have declined in recent years. In western Canada, populations (L. l. exubitorides) are now listed by the Committee on the Status of Endangered Wildlife in Canada as being "Threatened", whereas Alberta, the species is considered to be of "Special Concern". Since 1987, a prairie-wide roadside survey has been conducted every give years to monitor populations of the Loggerhead Shrike. This report summarizes the results of teh 2003 survey conducted in Alberta, and compares results with surveys conducted in 1987 and 1998 (a 1993 survey conducted in Manitoba and Saskatchewan was not done in this province). The 2003 survey doubled the effort expended in previous yeras (8095 km on 31 routes versus 3802 km on 16 routes), and collected additional information on detection distances and probability to derive and estimate of population size for the provice.
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An overview of Alberta's wildlife, including both plants and animals. Describes the status of Alberta species in general terms and how wildlife populations are evaluated to identify species at risk.
69 Pages
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Unfortunately, some species of wildlife in Alberta are “at risk”. That is, they do not have all the requirements necessary to maintain a healthy population. Topics discussed in this paper are: What is wildlife? Why are some species "at risk"? How are species at risk identified in Alberta? How species at risk are identified and designated, managed? What is a recovery plan? What can you do to help?
For more information about species at risk, we encourage you to visit Alberta Sustainable Resource Development
8 Pages
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