LC
Willow Grouse Lagopus lagopus



Taxonomy

Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: #http://www.aerc.eu/DOCS/Bird_taxa_of _the_WP15.xls#.
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: #http://www.aerc.eu/DOCS/Bird_taxa_of _the_WP15.xls#.
Cramp, S. and Perrins, C.M. 1977-1994. Handbook of the birds of Europe, the Middle East and Africa. The birds of the western Palearctic. Oxford University Press, Oxford.
Cramp, S.; Perrins, C. M. 1977-1994. Handbook of the birds of Europe, the Middle East and Africa. The birds of the western Palearctic. Oxford University Press, Oxford.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency low
Land-mass type Average mass -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 55,900,000 km2 medium
Extent of Occurrence (non-breeding) 48,000,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size 10000000-29999999 mature individuals poor estimated 2012
Population trend decreasing - suspected -
Generation length 4.2 years - - -

Population justification: The global population is estimated to number > c.40,000,000 individuals (Rich et al. 2004). The European population is estimated at 1,010,000-2,150,000 pairs, which equates to 2,020,000-4,310,000 mature individuals (BirdLife International 2015). Europe forms approximately 15% of the global range, so a very preliminary estimate of the global population size is 13,000,000-28,700,000 mature individuals, although further validation of this estimate is needed.The breeding population in Russia is estimated at c.100,000-1 million breeding pairs (Brazil 2009).

Trend justification: This species is widespread and common. It is suspected to exhibit marked three-fold to five-fold population fluctuations over ten year cycles. However declines have been noted locally owing to over-hunting. The species range has contracted in certain regions such as the Balkans, possibly owing to climatic changes (del Hoyo et al. 1994). In Europe the population size is estimated to be decreasing by 30-49% in 12.6 years (three generations) (BirdLife International 2015).


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Belarus extant native yes
Belgium extant introduced yes
Canada extant native yes
China (mainland) extant native yes
Czechia extant native yes
Estonia extant native yes
Faroe Islands (to Denmark) extant introduced yes
Finland extant native yes
Germany extant native yes
Ireland extant native yes
Kazakhstan extant native yes
Latvia extant native yes
Lithuania extant native yes
Mongolia extant native yes
Norway extant native yes
Poland extant vagrant yes
Russia extant native yes
Russia (Asian) extant native yes
Russia (Central Asian) extant native yes
Russia (European) extant native yes
Spain extant native yes
St Pierre and Miquelon (to France) extinct introduced yes
Sweden extant native yes
United Kingdom extant native yes
USA extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Boreal suitable resident
Grassland Subarctic suitable resident
Grassland Temperate suitable resident
Grassland Tundra major resident
Shrubland Boreal suitable resident
Altitude   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

Recommended citation
BirdLife International (2024) Species factsheet: Lagopus lagopus. Downloaded from https://datazone.birdlife.org/species/factsheet/willow-grouse-lagopus-lagopus on 29/02/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org on 29/02/2024.