LC
Western Sandpiper Calidris mauri



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.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.html#.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.
Turbott, E. G. 1990. Checklist of the birds of New Zealand. Ornithological Society of New Zealand, Wellington.
Turbott, E.G. 1990. Checklist of the birds of New Zealand. Ornithological Society of New Zealand, Wellington.

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 full migrant Forest dependency Does not normally occur in forest
Land mass type Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 947,000
Extent of Occurrence non-breeding (km2) 27,000,000
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2009
Population trend Decreasing estimated -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Largest subpopulations - - -
Generation length (yrs) 7.4 - - -

Trend justification: This species has undergone a small or statistically insignificant decrease over the last 40 years in North America (data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Anguilla (to UK) N Extant
Antigua and Barbuda N Extant
Aruba (to Netherlands) N Extant
Bahamas N Extant
Barbados N Extant
Belize N Extant Yes
Bermuda (to UK) N Extant
Bonaire, Sint Eustatius and Saba (to Netherlands) N Extant
Canada N Extant Yes
Cayman Islands (to UK) N Extant
Chile N Extant
Colombia N Extant
Costa Rica N Extant Yes
Cuba N Extant
Curaçao (to Netherlands) N Extant
Dominica N Extant
Dominican Republic N Extant
Ecuador N Extant
El Salvador N Extant
France V Extant
French Guiana N Extant
Grenada N Extant
Guadeloupe (to France) N Extant Yes
Guatemala N Extant
Guyana N Extant
Haiti N Extant
Honduras N Extant
Ireland V Extant
Jamaica N Extant Yes
Japan V Extant
Martinique (to France) N Extant
Mexico N Extant
Montserrat (to UK) N Extant
New Zealand V Extant
Nicaragua N Extant
Panama N Extant
Peru N Extant
Portugal V Extant
Puerto Rico (to USA) N Extant
Russia N Extant
Russia (Asian) N Extant
Sint Maarten (to Netherlands) N Extant
Spain V Extant
St Barthelemy (to France) N Extant
St Kitts and Nevis N Extant
St Lucia N Extant
St Martin (to France) N Extant Yes
St Pierre and Miquelon (to France) V Extant Yes
St Vincent and the Grenadines N Extant
Suriname N Extant
Sweden V Extant
Taiwan, China V Extant
Trinidad and Tobago N Extant Yes
Turks and Caicos Islands (to UK) N Extant
United Kingdom V Extant
United States Minor Outlying Islands (to USA) N Extant
USA N Extant Yes
Venezuela N Extant
Virgin Islands (to UK) N Extant Yes
Virgin Islands (to USA) N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Venezuela Humedales Boca del Río Unare
Jamaica Yallahs
Bahamas Grog Pond
Canada Lac La Biche
Canada Tofino Mudflats
Canada Boundary Bay - Roberts Bank - Sturgeon Bank (Fraser River Estuary)
St Vincent and the Grenadines Ashton Wetland
St Vincent and the Grenadines Mustique Island
Bahamas Grand Bahama Southern Shore
Bahamas Gilliam Bay
Bahamas South Beach Tidal Flats
Panama Upper Bay of Panamá
Panama Chorrera Bay
Panama Parita Bay
Panama Chimán Wetlands
Belize Belize Off-shore and Barrier Islands
Belize Rio Bravo CMA Gallon Jug Estate
Belize Northeastern Belize
Belize Belize Coastal and near shore islands
Costa Rica Nicoya Gulf mangroves and coastal areas
Puerto Rico (to USA) Jobos Bay
Puerto Rico (to USA) Suroeste
St Lucia Point Sables
St Lucia Iyanola and Grande Anses, Esperance and Fond D'ors
Virgin Islands (to USA) Great Pond
Virgin Islands (to USA) Southgate and Green Cay
Bahamas North Atlantic Abaco Cays
Bahamas Red Bays
Mexico Bahía Santa María
Mexico Delta del Río Colorado
Cuba Delta del Mayarí
Mexico Ensenada de Pabellones
Mexico Humedales Costeros del Norte de la Península de Yucatán
Trinidad and Tobago West Coast Mudflats
USA Salton Sea
USA Trading Bay
USA Redoubt Bay
USA Fox River Flats
USA Bear River Bay UT02
USA Copper River Delta
USA Stikine River Delta
Bahamas Joulter Cays
Bahamas Kemp Cay to Pigeon Cay
Mexico Archipiélago San José
Mexico Bahía de Ceuta-Cospita
Mexico Lago de Texcoco
Mexico Estero Cardonal
Ecuador Zona intermareal del Sur del Golfo de Guayaquil
Mexico Zonas Húmedas de Yávaros
Mexico Agiabampo

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Grassland Tundra major breeding
Marine Coastal/Supratidal Coastal Brackish/Saline Lagoons/Marine Lakes suitable non-breeding
Marine Coastal/Supratidal Coastal Freshwater Lakes suitable non-breeding
Marine Intertidal Mud Flats and Salt Flats major non-breeding
Marine Intertidal Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc major non-breeding
Marine Neritic Estuaries major non-breeding
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 (2020) Species factsheet: Calidris mauri. Downloaded from http://www.birdlife.org on 23/10/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/10/2020.