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McKay's Bunting Plectrophenax hyperboreus

IUCN Red List Criteria

Near Threatened (criteria nearly met) D1+2 

IUCN Red List history

Year Category
2012 Near Threatened
2008 Near Threatened
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern

Species attributes

Migratory status full migrant Forest dependency Does not normally occur in forest
Land mass type shelf island
Average mass 54.5 g

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 5,400 medium
Extent of Occurrence non-breeding (km2) 72,400 medium
Number of locations 2-5 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 1600-1700 medium Estimated 2003
Population trend Increasing -
Number of subpopulations 1 - - -
Largest subpopulation - - -
Generation length (yrs) 3.9 - - -
Population justification: The population is estimated to number 2,500 individuals, roughly equivalent to 1,600-1,700 mature individuals.
Trend justification: The species is currently thought to be increasing.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage
Canada Vagrant Extant   Yes  
Mexico Unknown Extant      
USA Native Extant Yes    

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Grassland Tundra major breeding
Grassland Tundra major non-breeding
Marine Coastal/Supratidal Sea Cliffs and Rocky Offshore Islands major breeding
Marine Coastal/Supratidal Sea Cliffs and Rocky Offshore Islands major non-breeding
Marine Intertidal Rocky Shoreline major breeding
Marine Intertidal Rocky Shoreline major non-breeding
Marine Intertidal Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc major breeding
Marine Intertidal Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc major non-breeding
Marine Intertidal Shingle and/or Pebble Shoreline and/or Beaches major breeding
Marine Intertidal Shingle and/or Pebble Shoreline and/or Beaches major non-breeding
Marine Intertidal Tidepools major breeding
Marine Intertidal Tidepools major non-breeding
Altitude 0 - 0 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Unknown Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Common Brushtail (Trichosurus vulpecula) Timing Scope Severity Impact
Future Majority (50-90%) Rapid Declines Low Impact: 5
Stresses
Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Ferret (Mustela furo) Timing Scope Severity Impact
Future Majority (50-90%) Rapid Declines Low Impact: 5
Stresses
Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Red Fox (Vulpes vulpes) Timing Scope Severity Impact
Future Majority (50-90%) Rapid Declines Low Impact: 5
Stresses
Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Stoat (Mustela erminea) Timing Scope Severity Impact
Future Majority (50-90%) Rapid Declines Low Impact: 5
Stresses
Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Unspecified rats (Rattus spp.) Timing Scope Severity Impact
Future Majority (50-90%) Rapid Declines Low Impact: 5
Stresses
Reduced reproductive success

Recommended citation
BirdLife International (2014) Species factsheet: Plectrophenax hyperboreus. Downloaded from http://www.birdlife.org on 17/04/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 17/04/2014.

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 Near Threatened
Family Emberizidae (Buntings, American sparrows and allies)
Species name author Ridgway, 1884
Population size 1600-1700 mature individuals
Population trend Increasing
Distribution size (breeding/resident) 5,400 km2
Country endemic? Yes
Links to further information
- Summary information on this species