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Buff-breasted Sandpiper Tryngites subruficollis

IUCN Red List Criteria

Near Threatened (criteria nearly met) C2a(i) 

IUCN Red List history

Year Category
2012 Near Threatened
2008 Near Threatened
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 continent
shelf island
Average mass -


  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 599,000 medium
Extent of Occurrence non-breeding (km2) 1,500,000 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 11000-56000 medium Estimated 2006
Population trend Decreasing poor -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 5.7 - - -
Population justification: The global population is estimated to number c.16,000-84,000 individuals (Morrison et al. 2006).
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.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage
Antigua and Barbuda Native Extant     Yes
Argentina Native Extant   Yes  
Aruba (to Netherlands) Vagrant Extant      
Australia Vagrant Extant      
Austria Vagrant Extant      
Bahamas Vagrant Extant      
Barbados Native Extant     Yes
Belgium Vagrant Extant      
Belize Native Extant     Yes
Bermuda (to UK) Native Extant     Yes
Bolivia Native Extant   Yes  
Bonaire, Sint Eustatius and Saba (to Netherlands) Native Extant     Yes
Brazil Native Extant   Yes  
Bulgaria Vagrant Extant      
Canada Native Extant Yes   Yes
Colombia Native Extant     Yes
Costa Rica Native Extant     Yes
Cuba Vagrant Extant      
Curaçao (to Netherlands) Native Extant     Yes
Denmark Vagrant Extant      
Ecuador Native Extant   Yes Yes
Egypt Vagrant Extant      
El Salvador Native Extant     Yes
Faroe Islands (to Denmark) Vagrant Extant      
Finland Vagrant Extant      
France Vagrant Extant      
French Polynesia Vagrant Extant      
Gabon Vagrant Extant      
Gambia Vagrant Extant      
Germany Vagrant Extant      
Ghana Vagrant Extant      
Grenada Native Extant     Yes
Guadeloupe (to France) Native Extant     Yes
Guatemala Native Extant     Yes
Guyana Native Extant     Yes
Haiti Native Extant     Yes
Honduras Native Extant     Yes
Hungary Vagrant Extant      
Iceland Vagrant Extant      
India Vagrant Extant      
Ireland Vagrant Extant      
Italy Vagrant Extant      
Jamaica Vagrant Extant      
Japan Vagrant Extant      
Kenya Vagrant Extant      
Malta Vagrant Extant      
Marshall Islands Vagrant Extant      
Martinique (to France) Native Extant     Yes
Mexico Native Extant      
Micronesia, Federated States of Vagrant Extant      
Morocco Vagrant Extant      
Namibia Vagrant Extant      
Netherlands Vagrant Extant      
Nicaragua Native Extant     Yes
Norway Vagrant Extant      
Oman Vagrant Extant     Yes
Panama Native Extant      
Papua New Guinea Vagrant Extant      
Paraguay Native Extant   Yes  
Peru Native Extant      
Poland Vagrant Extant      
Portugal Vagrant Extant      
Puerto Rico (to USA) Native Extant     Yes
Russia (Asian) Native Extant Yes    
Saudi Arabia Vagrant Extant     Yes
Seychelles Vagrant Extant      
Sierra Leone Vagrant Extant      
Sint Maarten (to Netherlands) Native Extant     Yes
South Africa Vagrant Extant      
South Korea Vagrant Extant      
Spain Vagrant Extant      
Sri Lanka Vagrant Extant      
St Lucia Native Extant     Yes
St Pierre and Miquelon (to France) Native Extant     Yes
St Vincent and the Grenadines Native Extant     Yes
Suriname Native Extant     Yes
Svalbard and Jan Mayen Islands (to Norway) Vagrant Extant      
Sweden Vagrant Extant      
Switzerland Vagrant Extant      
Taiwan (China) Vagrant Extant      
Trinidad and Tobago Native Extant     Yes
Tunisia Vagrant Extant      
Ukraine Vagrant Extant      
United Kingdom Vagrant Extant      
United States Minor Outlying Islands (to USA) Vagrant Extant      
Uruguay Native Extant   Yes  
USA Native Extant Yes    
Venezuela 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
Argentina Bahía de Samborombón y Punta Rasa site factsheet
Argentina Bañados del Río Saladillo site factsheet
Argentina Barrancas de Baradero site factsheet
Argentina Estancia Medaland site factsheet
Argentina Laguna Melincué site factsheet
Argentina Monumento Natural Laguna de Los Pozuelos site factsheet
Argentina Parque Costero del Sur site factsheet
Argentina Parque Nacional Chaco site factsheet
Argentina San Javier site factsheet
Bolivia Palmar de las Islas site factsheet
Bolivia Reserva Nacional Amazónica Manuripi Heath site factsheet
Brazil Banhado do Maçarico e Cordões Litorâneos Adjacentes site factsheet
Brazil Banhado do Taim site factsheet
Brazil Estuário da Laguna dos Patos site factsheet
Brazil Parque Nacional da Lagoa do Peixe site factsheet
Brazil Várzea do Canal São Gonçalo site factsheet
Canada Beaverhill Lake site factsheet
Colombia Ciénaga Grande, Isla de Salamanca and Sabana Grande RAMSAR biosphere reserve site factsheet
Colombia Parque Nacional Natural Sanquianga site factsheet
Ecuador Lago de Colta site factsheet
Honduras Islas de la Bahía y Cayos Cochinos site factsheet
Paraguay Bahía de Asunción site factsheet
Paraguay Lagunas Saladas - Riacho Yacaré site factsheet
Paraguay Parque Nacional Tinfunqué - Estero Patiño site factsheet
Peru Manu site factsheet
Peru Reserva Nacional de Paracas site factsheet
Uruguay Castillos Lagoon site factsheet
Uruguay El Tapado Grasslands site factsheet
Uruguay Garzón Lagoon site factsheet
Uruguay Rocha Lagoon site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Aquatic & Marine 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%) Slow, Significant Decline Medium Impact:
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
Species mortality
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Unknown Unknown
Indirect ecosystem effects, Ecosystem degradation
Pollution Agricultural & forestry effluents / Herbicides and pesticides Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Ecosystem degradation, Species mortality


Purpose Primary form used Life stage used Source Scale Level Timing
Food (human) Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent
Sport Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent

Recommended citation
BirdLife International (2014) Species factsheet: Tryngites subruficollis. Downloaded from on 22/07/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from on 22/07/2014.

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 Scolopacidae (Sandpipers and allies)
Species name author (Vieillot, 1819)
Population size 11000-56000 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 599,000 km2
Country endemic? No
Links to further information
- Summary information on this species