Population status

Greater Sage-Grouse
(Centrocercus urophasianus)

The Greater Sage-Grouse is best monitored in Canada by targeted surveys. The urophasianus population was estimated to be between 93 and 138 birds in 2012, and was estimated to have declined by 82% to 92% between 1994 and 2012 (COSEWIC 2011d). In addition, about 76% of leks (display grounds) in Alberta were lost between 1968 and 2012, and about 93% of leks in Saskatchewan were lost between 1988 and 2012. Both populations declined by an estimated 98% since their peak numbers were recorded in 1968 in Alberta and 1988 in Saskatchewan (Environment Canada 2013). This translates into a large decrease in the Canadian population relative to the 1970s for this subspecies, which now represents the entire Canadian population of Greater Sage-Grouse. The population has not reached the long-term objective defined in the Recovery Strategy: a stable or increasing population of at least 1095 adults among 16 or more active leks in Alberta, and 1500 adults among 20 or more active leks in Saskatchewan (Environment Canada 2013). The national population goal for the extirpated phaios subspecies is to recover the Canadian population.

 

Population goal and acceptable levels of variation

Species/groupGoalLower levelUpper level
Greater Sage-GrouseNot applicableNot applicableNot applicable
Greater Sage-Grouse phaios subspeciesAbundance required for de-listing (SARA)Equal to goalNot applicable
Greater Sage-Grouse urophasianus subspeciesLong-term recovery goal (SARA)Equal to goalNot applicable

References