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Species at risk survey report : loggerhead shrike survey 2019

Description

In Alberta, the loggerhead shrike is considered to be a Species of Special Concern. Since 1987, a prairie-wide roadside survey has been conducted every five years to monitor populations. This... More ≫

Description

In Alberta, the loggerhead shrike is considered to be a Species of Special Concern. Since 1987, a prairie-wide roadside survey has been conducted every five years to monitor populations. This report summarizes results of the 2019 survey conducted in Alberta, and compares results with surveys conducted in 1987, 1998, 2003, 2008 and 2013.

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The 2013 loggerhead shrike survey in Alberta

Description

In Alberta, the loggerhead shrike is considered to be a Species of Special Concern. Since 1987, a prairie-wide roadside survey has been conducted every five years to monitor populations. This... More ≫

Description

In Alberta, the loggerhead shrike is considered to be a Species of Special Concern. Since 1987, a prairie-wide roadside survey has been conducted every five years to monitor populations. This report summarizes results of the 2013 survey conducted in Alberta, and compares results with surveys conducted in 1987, 1998, 2003 and 2008.

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Survey of the loggerhead shrike in the southern Aspen Parkland Region, 2000-2001

Description

Populations of the loggerhead shrike have declined markedly in many areas of North America in recent years. In Alberta, the species is now absent from much of the central aspen parkland, and is... More ≫

Description

Populations of the loggerhead shrike have declined markedly in many areas of North America in recent years. In Alberta, the species is now absent from much of the central aspen parkland, and is considered to be a Species of Special Concern in the province. In the central areas of the province, populations are now so low and sparsely distributed that monitoring techniques used in other areas of the province are not effective. In 2000 and 2001, an intensive search for loggerhead shrikes was conducted along the southern boundary of the central aspen parkland to help define the status and breeding locations of the species in this area. Shrikes were found at 61 unique locations over the two years.

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