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Gunnison Grouse  Centrocercus minimus

IUCN Red List Criteria

Critically Endangered  
Endangered B2ab(i,ii,iii,v) 
Vulnerable B1ab(i,ii,iii,v)+2ab(i,ii,iii,v);C1 

IUCN Red List history

Year Category
2012 Endangered
2008 Endangered
2007 Endangered
2005 Endangered
2004 Endangered
2000 Endangered
1994 Not Recognised
1988 Not Recognised

Species attributes

Migratory status not a migrant Forest dependency Does not normally occur in forest
Land mass type continent
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 9,700 medium
Area of Occupancy breeding/resident (km2) 499 good
Number of locations 6-10 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 1700 medium Estimated 2005
Population trend Decreasing medium -
Number of subpopulations 7 - - -
Largest subpopulation 2000 - - -
Generation length (yrs) 5.2 - - -
Population justification: The population is estimated to number 1,700 mature individuals, roughly equating to 2,500-2,600 individuals in total (C. Braun in litt. 2005, J. R. Young in litt. 2005).
Trend justification: There have been long-term declines in lek sites, males at leks and offspring (BLM 1999, J. R. Young in litt. 1999, Storch 2000, Young et al. 2000), thus the population is estimated to be experiencing a moderate and ongoing population decline.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
USA Native Extant       Yes

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
USA Gunnison Basin site factsheet
USA San Juan County - Gunnison Sage-Grouse site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Shrubland Temperate major resident
Altitude 2250 - 2550 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Agro-industry farming Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching / Agro-industry grazing, ranching or farming Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals / Intentional use (species is the target) Timing Scope Severity Impact
Past, Unlikely to Return Minority (<50%) Slow, Significant Decline Past Impact
Stresses
Species mortality
Climate change & severe weather Temperature extremes Timing Scope Severity Impact
Ongoing Majority (50-90%) Causing/Could cause fluct Medium Impact: 6
Stresses
Species mortality
Energy production & mining Oil & gas drilling Timing Scope Severity Impact
Future Minority (<50%) Rapid Declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion
Human intrusions & disturbance Recreational activities Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Species disturbance
Human intrusions & disturbance Work & other activities Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Species disturbance
Invasive and other problematic species, genes & diseases Problematic native species/diseases Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Viral/prion-induced diseases / West Nile Virus (Flaviviridae) Timing Scope Severity Impact
Future Minority (<50%) Rapid Declines Low Impact: 4
Stresses
Species mortality
Natural system modifications Dams & water management/use / Small dams Timing Scope Severity Impact
Past, Unlikely to Return Minority (<50%) Negligible declines Past Impact
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion
Transportation & service corridors Roads & railroads Timing Scope Severity Impact
Past, Unlikely to Return Minority (<50%) Rapid Declines Past Impact
Stresses
Ecosystem degradation, Ecosystem conversion
Transportation & service corridors Utility & service lines Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion, Species mortality

Utilisation

Purpose Primary form used Life stage used Source Scale Level Timing
Food (human) Whole Adults and juveniles Wild Subsistence, National Non-trivial Historical
Sport Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent

Recommended citation
BirdLife International (2014) Species factsheet: Centrocercus minimus. Downloaded from http://www.birdlife.org on 26/07/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 26/07/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Endangered
Family Phasianidae (Pheasants, Partridges, Turkeys, Grouse)
Species name author Young, Braun, Oyler-McCance, Hupp & Quinn, 2000
Population size 1700 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 9,700 km2
Country endemic? Yes
Links to further information
- Summary information on this species