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Species at risk survey report : ferruginous hawk inventory 2022

Description

The ferruginous hawk is a large raptor within the Grassland Natural Region of Alberta, inhabiting areas dominated by native prairie. It is currently listed as an Endangered species under Alberta’s... More ≫

Description

The ferruginous hawk is a large raptor within the Grassland Natural Region of Alberta, inhabiting areas dominated by native prairie. It is currently listed as an Endangered species under Alberta’s Wildlife Act. The provincial ferruginous hawk population has been estimated every five years since 1982, except between the years 1993 and 1999. This report presents the findings of the 2022 survey.

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The 2015 ferruginous hawk (Buteo regalis) inventory and population analysis

Description

The ferruginous hawk is a large raptor within the Grassland Natural Region of Alberta; inhabiting areas dominated by native prairie. It is currently listed as an Endangered species under Albert’s... More ≫

Description

The ferruginous hawk is a large raptor within the Grassland Natural Region of Alberta; inhabiting areas dominated by native prairie. It is currently listed as an Endangered species under Albert’s Wildlife Act. The provincial ferruginous hawk population has been estimated every five years since 1982, except between the years 1993 and 1999. This report presents the findings of the 2015 survey. The 2015 population inventory showed a slight, but insignificant increase. Further research is required to confirm the cause for the slight increase. Although, initial analysis suggests it is related to a fluctuation of their primary prey species as a result of dry conditions of the previous year. Overall, Alberta’s Ferruginous Hawk population remains significantly lower than the 1992 estimate, therefore, it remains essential for management actions to assist in the recovery of the species.

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The 2010 ferruginous hawk inventory and population analysis

Description

The ferruginous hawk is a large raptor within the Grassland Natural Region of Alberta; inhabiting areas dominated by native prairie. The provincial ferruginous hawk population has been estimated... More ≫

Description

The ferruginous hawk is a large raptor within the Grassland Natural Region of Alberta; inhabiting areas dominated by native prairie. The provincial ferruginous hawk population has been estimated every five years since 1982, except between the years 1993 and 1999. The population estimate is based on the number of active nests detected during each inventory year. During the 2010 inventory, a population estimate of 643 ± 169 breeding pairs of ferruginous hawks was calculated. This population estimate is similar to the 2005 estimate, which implies that the population is relatively stable at low numbers. Overall, Alberta's ferruginous hawk population still remains significantly lower than the 1992, and thus, it is essential to take management actions to assist with the recovery of this species.

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Sensitive species inventory guidelines

Description

The purpose of this document is to provide clear, concise inventory guidelines for a number of wildlife species in Alberta, with a focus on pre-development wildlife surveys. The use of... More ≫

Description

The purpose of this document is to provide clear, concise inventory guidelines for a number of wildlife species in Alberta, with a focus on pre-development wildlife surveys. The use of standardized guidelines for surveying and inventorying sensitive species over time should provide data that more accurately reflects ecological patterns and landscape-level changes in distribution and population trends across the province.

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