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Buff-breasted Sandpiper Calidris subruficollis



Taxonomy

Taxonomic note
Calidris subruficollis (del Hoyo and Collar 2014) was previously placed in the genus Tryngites.

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#.
Christidis, L. and Boles, W.E. 2008. Systematics and Taxonomy of Australian Birds. CSIRO Publishing, Collingwood, Australia.
Cramp, S. and Simmons, K.E.L. (eds). 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. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

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

Red List history
Year Category Criteria
2016 Near Threatened C2a(i)
2012 Near Threatened C2a(i)
2008 Near Threatened C2a(i)
2006 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 Land-mass type - continent
Land-mass type - shelf island
Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 2,470,000 medium
Extent of Occurrence non-breeding (km2) 1,950,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 15300-56000 medium estimated 2012
Population trend Decreasing poor suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 10-19 - - -
Decline (10 years/3 generation past and future) 10-19 - - -
Number of subpopulations - - -
Largest subpopulations - - -
Generation length (yrs) 5.7 - - -

Population justification: Originally numbering in the hundreds of thousands to millions (1890s-1900s), the species was brought to near extinction in the early 1920s by habitat destruction and hunting. It has not recovered, with the current population estimated at 23,000-84,000 individuals (Jorgensen et al. 2008, Norling et al. 2012), which equates to 15,333-56,000 mature individuals, rounded here to 15,300 - 56,000 mature individuals. Andres et al. (2012) suggest using a population estimate of 56,000 individuals with an estimated range of 35,000 to 78,000.

Trend justification: A moderate and on-going decline is suspected based on surveys at staging posts. This is thought to be driven by habitat loss and conversion, but contaminants may also have an impact. The species is difficult to monitor, as it is not faithful to breeding sites (although it is more faithful to wintering sites (Almeida 2009)), but data from North American migration sites suggest that declines are continuing (L. Wolfenbarger and J. McCarty, pers. comm.). Repeated counts on the wintering grounds however have not indicated a decline (Southern Cone Grasslands Alliance, pers. comm.), although counts at Estancia Medaland, Argentina showed a decline from approximately 2000 individuals in 1973-4 (J. P. Myers, in litt.) to 56-300 in 2007 (BirdLife International, 2016). New population estimates are being generated for the Rainwater Basin of Nebraska, the Flint Hills of Kansas, and the Gulf Coast of Texas and will allow a more complete assessment of current trends.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Antigua and Barbuda N Extant Yes
Argentina N Extant Yes
Aruba (to Netherlands) V Extant
Australia V Extant
Austria V Extant
Bahamas V Extant
Barbados N Extant Yes
Belgium V Extant
Belize N Extant Yes
Benin V Extant
Bermuda (to UK) N Extant Yes
Bolivia N Extant Yes
Brazil N Extant Yes
Bulgaria V Extant
Canada N Extant Yes Yes
Colombia N Extant Yes
Costa Rica N Extant Yes
Cuba V Extant
Denmark V Extant
Ecuador N Extant Yes
Egypt V Extant
El Salvador N Extant Yes
Faroe Islands (to Denmark) V Extant
Finland V Extant
France V Extant
French Polynesia V Extant
Gabon V Extant
Gambia V Extant
Germany V Extant
Ghana V Extant
Grenada N Extant Yes
Guadeloupe (to France) N Extant Yes
Guatemala N Extant Yes
Guyana N Extant Yes
Haiti N Extant Yes
Honduras N Extant Yes
Hungary V Extant
Iceland V Extant
India V Extant
Ireland V Extant
Italy V Extant
Jamaica V Extant
Japan V Extant
Kenya V Extant
Malta V Extant
Marshall Islands V Extant
Martinique (to France) N Extant Yes
Mexico N Extant
Micronesia, Federated States of V Extant
Morocco V Extant
Namibia V Extant
Netherlands V Extant
Nicaragua N Extant Yes
Norway V Extant
Oman V Extant Yes
Panama N Extant Yes
Papua New Guinea V Extant
Paraguay N Extant Yes
Peru N Extant
Poland V Extant
Portugal V Extant
Puerto Rico (to USA) N Extant Yes
Russia N Extant Yes
Russia (Asian) N Extant Yes
Saudi Arabia V Extant Yes
Seychelles V Extant
Sierra Leone V Extant
South Africa V Extant
South Korea V Extant
Spain V Extant
Sri Lanka V Extant
St Lucia N Extant Yes
St Pierre and Miquelon (to France) N Extant Yes
St Vincent and the Grenadines N Extant Yes
Suriname N Extant Yes
Svalbard and Jan Mayen Islands (to Norway) V Extant
Sweden V Extant
Switzerland V Extant
Taiwan (China) V Extant
Trinidad and Tobago N Extant Yes
Tunisia V Extant
Ukraine V Extant
United Kingdom V Extant Yes
United States Minor Outlying Islands (to USA) V Extant
Uruguay N Extant Yes
USA N Extant Yes
Venezuela N Extant Yes
Virgin Islands (to USA) V Extant

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Argentina Bahía de Samborombón y Punta Rasa
Argentina Bañados del Río Saladillo
Argentina Barrancas de Baradero
Argentina Estancia Medaland
Argentina Laguna Melincué
Argentina Lagunas Encadenadas del Oeste de la Provincia de Buenos Aires
Argentina Monumento Natural Laguna de Los Pozuelos
Argentina Parque Costero del Sur
Argentina Parque Nacional Chaco
Argentina San Javier
Bolivia Palmar de las Islas
Bolivia Reserva Nacional Amazónica Manuripi Heath
Brazil Banhado do Maçarico e Cordões Litorâneos Adjacentes
Brazil Banhado do Taim
Brazil Estuário da Laguna dos Patos
Brazil Parque Nacional da Lagoa do Peixe
Brazil Várzea do Canal São Gonçalo
Canada Beaverhill Lake
Colombia Chaviripa-El Rubí
Colombia Ciénaga Grande, Isla de Salamanca and Sabana Grande RAMSAR biosphere reserve
Colombia Parque Nacional Natural Sanquianga
Colombia Parque Wisirare
Colombia Reservas de la vereda Altagracia
Colombia Taparas
Ecuador Lago de Colta
Honduras Islas de la Bahía y Cayos Cochinos
Paraguay Bahía de Asunción
Paraguay Lagunas Saladas - Riacho Yacaré
Paraguay Parque Nacional Tinfunqué - Estero Patiño
Peru Manu
Peru Reserva Nacional de Paracas
Uruguay Castillos Lagoon
Uruguay El Tapado Grasslands
Uruguay Garzón Lagoon
Uruguay Rocha Lagoon
USA Cheyenne Bottoms Preserve and Wildlife Area
USA Coastal Prairie
USA Flint Hills Region
USA Katy Prairie Conservancy

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Aquatic & Marine Artificial/Aquatic - Seasonally Flooded Agricultural Land marginal passage
Artificial/Terrestrial Arable Land major passage
Grassland Subtropical/Tropical Dry major non-breeding
Grassland Tundra major breeding
Altitude 0 - 1000 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 Majority (50-90%) Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Annual & perennial non-timber crops - Shifting agriculture Timing Scope Severity Impact
Ongoing Unknown Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Wood & pulp plantations - Agro-industry plantations Timing Scope Severity Impact
Ongoing Minority (<50%) Unknown Unknown
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 Whole (>90%) Very Rapid Declines Past Impact
Stresses
Species mortality
Climate change & severe weather Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation
Climate change & severe weather Timing Scope Severity Impact
Future Whole (>90%) Unknown Unknown
Stresses
Ecosystem degradation, Reduced reproductive success
Climate change & severe weather Timing Scope Severity Impact
Future Minority (<50%) Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion, Reduced reproductive success, Species mortality
Energy production & mining Timing Scope Severity Impact
Ongoing Minority (<50%) Unknown Unknown
Stresses
Ecosystem degradation
Energy production & mining Timing Scope Severity Impact
Ongoing Unknown Unknown
Stresses
Ecosystem degradation
Energy production & mining Timing Scope Severity Impact
Ongoing Unknown Unknown Unknown
Stresses
Species disturbance, Ecosystem degradation, Species mortality
Pollution Agricultural & forestry effluents - Herbicides and pesticides Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Ecosystem degradation, Species mortality
Residential & commercial development Timing Scope Severity Impact
Ongoing Low Impact: 3
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Timing Scope Severity Impact
Ongoing Minority (<50%) Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Food - human - - Non-trivial Recent
Sport hunting/specimen collecting - - Non-trivial Recent

Recommended citation
BirdLife International (2017) Species factsheet: Calidris subruficollis. Downloaded from http://www.birdlife.org on 19/10/2017. Recommended citation for factsheets for more than one species: BirdLife International (2017) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 19/10/2017.