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Species at risk survey report : western grebe populations at Buffalo and Gull lakes 2023

Description

The western grebe (Aechmophorus occidentalis) is a colonial waterbird. This report documents population estimates of adult western grebes at Buffalo and Gull Lake in 2023, compares these estimates... More ≫

Description

The western grebe (Aechmophorus occidentalis) is a colonial waterbird. This report documents population estimates of adult western grebes at Buffalo and Gull Lake in 2023, compares these estimates to previous assessments at those lakes, and discusses population trends.

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Western grebe recovery plan : summary of public response

Description

Presents a summary of the responses received during a public survey on the Western Grebe Recovery Plan, and explains how the plan was redrafted to incorporate information gathered through the... More ≫

Description

Presents a summary of the responses received during a public survey on the Western Grebe Recovery Plan, and explains how the plan was redrafted to incorporate information gathered through the public response.

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Alberta western grebe recovery plan

Description

This is the recovery plan for the western grebe, a colonial nesting water bird in Alberta that is listed as Threatened under the Wildlife Act. It includes a situational analysis, threats... More ≫

Description

This is the recovery plan for the western grebe, a colonial nesting water bird in Alberta that is listed as Threatened under the Wildlife Act. It includes a situational analysis, threats assessment, recovery goals and objective, and strategies and actions to recover the species.

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Distribution and abundance of the western grebe (Aechmophorus occidentalis) in Alberta : an update

Description

This is a compilation of previously-documented and newly-discovered records of the western grebe in Alberta through 2016. The report greatly expands the number of lakes known to be occupied during... More ≫

Description

This is a compilation of previously-documented and newly-discovered records of the western grebe in Alberta through 2016. The report greatly expands the number of lakes known to be occupied during the breeding season to 318, from a previous estimate of 80. The report suggests that western grebes are more abundant and widespread in Alberta than previously thought, and that the current status of "threatened" may require re-evaluation.

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Species at risk : western grebe

Description

This fact sheet provides information about western grebe

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Status of the western grebe (Aechmophorus occidentalis) in Alberta : update 2012

Description

This wildlife status report looks at the western grebe, a North American waterbird that winters on the Pacific coast and migrates inland to breed at the shallow margins of medium to large lakes... More ≫

Description

This wildlife status report looks at the western grebe, a North American waterbird that winters on the Pacific coast and migrates inland to breed at the shallow margins of medium to large lakes and wetlands. The species is local and uncommon in Alberta and is ranked as Sensitive, and in 2007 was designated as a Species of Special Concern. This report is part of the Alberta Wildlife Status Report series, which provides comprehensive summaries of selected wildlife species intended to be useful to those managing populations of species and their habitats, and to help identify species that may be formally designated as endangered or threatened.

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Population study of western grebes in Alberta 2001-2009 : implications for management and status designation

Description

This project was initiated in 2001 to monitor population trends and distribution of western grebes in Alberta. The project began in the Stony Plain study area, and then expanded to other areas of... More ≫

Description

This project was initiated in 2001 to monitor population trends and distribution of western grebes in Alberta. The project began in the Stony Plain study area, and then expanded to other areas of the province where the species occurs. Surveys of known colonies and a search for other breeding sites have continued each year through 2009. Biologists searched for western grebe colonies from the northern extreme of the breeding range in northeast and northwest Alberta, through the parkland and prairies, south to the United States border. Data from previous field seasons have been published in earlier reports in this series.

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Western (Aechmophorus occidentalis) grebes in Alberta : 2006 field summary

Description

This project was initiated in 2001 to monitor population trends and distribution of western grebes and eared grebes in Alberta. The project began in the Stony Plain study area with the intent to... More ≫

Description

This project was initiated in 2001 to monitor population trends and distribution of western grebes and eared grebes in Alberta. The project began in the Stony Plain study area with the intent to expand to other areas of the province where this species occurs. Now completing its sixth season, the study has expanded to the northeast, the northwest and to more areas within the Parkland Natural Region of the province. For the first time, data for all of the above are summarized in one document. The report deals solely with western grebes.

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Status of the western grebe (Aechmophorus occidentalis) in Alberta [2006]

Description

This wildlife status report looks at the western grebe, a North American waterbird that winters on the Pacific coast and migrates inland to breed at the shallow margins of medium to large lakes... More ≫

Description

This wildlife status report looks at the western grebe, a North American waterbird that winters on the Pacific coast and migrates inland to breed at the shallow margins of medium to large lakes and wetlands. The species is local and uncommon in Alberta and is ranked as Sensitive based on the lack of data, the species' sensitivity to human disturbance, and habitat degradation. This report is part of the Alberta Wildlife Status Report series, which provides comprehensive summaries of selected wildlife species intended to be useful to those managing populations of species and their habitats, and to help identify species that may be formally designated as endangered or threatened.

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Western (Aechmophorus occidentalis) and eared (Podiceps nigricollis) grebes of central Alberta : 2002 field summary

Description

The information presented in this report represents the findings from the second year of surveying western and eared grebes within the Stony Plain study area in Alberta. The surveys are projected... More ≫

Description

The information presented in this report represents the findings from the second year of surveying western and eared grebes within the Stony Plain study area in Alberta. The surveys are projected to span a five year period and the project is designed to monitor population trends and reproductive success of western grebes and eared grebes within the Stony Plain study area. In 2002, surveying effort was focused on the primary grebe populations identified in the initial year of the project. The regional population of western grebes was estimated to be approximately 2611 adults on six lakes. The Wabamun Lake colony continues to show signs of poor nesting success, which we now believe to be attributed to high rates of corvid nest depredation. This is a major concern since this colony is ranked nationally significant. Eared grebes were found on 10 lakes, for a conservative overall population estimate of 8633 adults.

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