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Snow Goose Anser caerulescens
BirdLife is updating this factsheet for the 2016 Red List
Please email us with any relevant information

IUCN Red List history

Year Category
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 full migrant Forest dependency Does not normally occur in forest
Land mass type   Average mass -


  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 581,000 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals poor Estimated 2009
Population trend Increasing Suspected -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 8.9 - - -
Trend justification: The overall population trend is increasing, although some populations may be stable and others have unknown trends (Wetlands International 2006). This species has undergone a large and statistically significant increase over the last 40 years in North America (4400% increase over 40 years, equating to a 159% increase per decade; data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007).

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Anguilla (to UK) Vagrant Extant   Yes    
Bahamas Vagrant Extant        
Barbados Vagrant Extant        
Belgium Vagrant Extant        
Belize Vagrant Extant        
Bermuda (to UK) Vagrant Extant        
Bulgaria Vagrant Extant        
Canada Native Extant     Yes Yes
China (mainland) Native Extant        
Cuba Vagrant Extant        
Czech Republic Vagrant Extant        
Denmark Vagrant Extant        
Estonia Vagrant Extant        
Faroe Islands (to Denmark) Vagrant Extant        
Finland Vagrant Extant        
France Vagrant Extant   Yes    
Germany Vagrant Extant        
Greenland (to Denmark) Native Extant Yes      
Honduras Vagrant Extant        
Iceland Vagrant Extant        
India Native Extant        
Ireland Vagrant Extant   Yes    
Italy Vagrant Extant        
Japan Native Extant        
Kazakhstan Vagrant Extant        
Latvia Vagrant Extant        
Lithuania Vagrant Extant        
Marshall Islands Vagrant Extant        
Mexico Native Extant        
Netherlands Vagrant Extant   Yes    
North Korea Vagrant Extant        
Norway Vagrant Extant        
Poland Vagrant Extant        
Portugal Vagrant Extant        
Puerto Rico (to USA) Vagrant Extant        
Romania Vagrant Extant        
Russia Native Extant Yes      
Russia (Asian) Native Extant Yes      
Russia (Central Asian) Vagrant Extant        
Russia (European) Native Extant        
South Korea Native Extant        
Spain Vagrant Extant        
St Pierre and Miquelon (to France) Vagrant Extant     Yes  
Trinidad and Tobago Vagrant Extant        
Turks and Caicos Islands (to UK) Vagrant Extant        
United Kingdom Vagrant Extant        
USA Native Extant Yes      
Virgin Islands (to USA) Vagrant Extant        

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Canada Akimiski Island site factsheet
Canada Akimiski Strait site factsheet
Canada Albany River Estuary and Assoc. Coastline site factsheet
Canada Banks Island Migratory Bird Sanctuary site factsheet
Canada Battures de Beauport and chenal de l'île d'Orléans site factsheet
Canada Beaverhill Lake site factsheet
Canada Bellshill Lake site factsheet
Canada Blow River Delta (Shingle Point to Tent Island) site factsheet
Canada Boas River and associated wetlands site factsheet
Canada Boundary Bay - Roberts Bank - Sturgeon Bank (Fraser River Estuary) site factsheet
Canada Cap Tourmente site factsheet
Canada Cape Henrietta Maria site factsheet
Canada Delta Marsh site factsheet
Canada Ekwan to Lakitusaki Shores site factsheet
Canada Foxe Basin Islands site factsheet
Canada Great Plain of the Koukdjuak site factsheet
Canada Hannah Bay site factsheet
Canada Hansman Lake site factsheet
Canada Hay and Zama Lakes site factsheet
Canada Jenny Lind Island site factsheet
Canada Kamouraska site factsheet
Canada Kaskattama River Mouth site factsheet
Canada Last Mountain Lake National Wildlife Area site factsheet
Canada Lower Mackenzie River Islands site factsheet
Canada Luck Lake site factsheet
Canada Mackenzie River Delta site factsheet
Canada Marais de Gros-Cacouna site factsheet
Canada Marais de la baie de L'Isle-Verte site factsheet
Canada Marais de Pointe-au-Père site factsheet
Canada McConnell River site factsheet
Canada Middle Mackenzie River Islands site factsheet
Canada Montmagny site factsheet
Canada Moose River Estuary site factsheet
Canada Nicolet et Baie-du-Fèbvre site factsheet
Canada North, West, and East Shoal Lakes site factsheet
Canada Nunaluk Spit to Herschel Island site factsheet
Canada Oak Hammock Marsh WMA site factsheet
Canada Oak Lake/Plum Lakes Area site factsheet
Canada Queen Maud Gulf site factsheet
Canada Rasmussen Lowlands site factsheet
Canada Réservoir Beaudet site factsheet
Canada Saint-Vallier site factsheet
Canada Severn River Coastline site factsheet
Canada Shagamu River and Area site factsheet
Canada South Shore Great Slave Lake (Slave River Delta to Taltson Bay) site factsheet
Canada Southwest Bylot site factsheet
Canada St. Lawrence Lake site factsheet
Canada Sutton River Coastline site factsheet
Canada Thomsen River site factsheet
Canada Whitewater Lake site factsheet
Canada Winisk River Estuary site factsheet
Mexico Complejo de Humedales del Noroeste de Chihuahua site factsheet
Russia (Asian) Cape Billings site factsheet
Russia (Asian) Wrangel island site factsheet
USA Coastal Prairie site factsheet
USA Delaware Bayshore Region site factsheet
USA Middle Creek Wildlife Management Area site factsheet
USA Quivira National Wildlife Refuge site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land Major non-breeding
Grassland Temperate Suitable non-breeding
Grassland Tundra Major breeding
Marine Intertidal Salt Marshes (Emergent Grasses) Suitable non-breeding
Rocky areas (eg. inland cliffs, mountain peaks) Suitable breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands Suitable breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) Suitable breeding
Wetlands (inland) Permanent Inland Deltas Suitable breeding
Altitude 0 - 2500 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
Indirect ecosystem effects, Ecosystem degradation


Purpose Primary form used Life stage used Source Scale Level Timing
Pets Whole Adults and juveniles Wild International Non-trivial Recent
Sport Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent
Sport hunting/specimen collecting - - - Subsistence, National
Pets/display animals, horticulture - - - International

Recommended citation
BirdLife International (2016) Species factsheet: Anser caerulescens. Downloaded from on 24/10/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from on 24/10/2016.

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 Least Concern
Family Anatidae (Ducks, Geese, Swans)
Species name author (Linnaeus, 1758)
Population size mature individuals
Population trend Increasing
Distribution size (breeding/resident) 581,000 km2
Country endemic? No
Links to further information
- Summary information on this species
- 2015 European Red List assessment