Data Zone
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: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.
Turbott, E.G. 1990. Checklist of the Birds of New Zealand. Ornithological Society of New Zealand, Wellington.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2024 | Least Concern | |
| 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 |
| Migratory status | full migrant | Forest dependency | low |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 9,270,000 km2 | medium |
| Extent of Occurrence (non-breeding) | 20,100,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 1500000 mature individuals | good | estimated | 2023 |
| Population trend | stable | - | suspected | - |
| Generation length | 3.16 years | - | - | - |
| Number of subpopulations | 1 | - | - | - |
| Percentage of mature individuals in largest subpopulation | 100% | - | - | - |
Population justification: The species has a large estimated population size of 1,500,000 mature individuals (Partners in Flight 2023).
Trend justification: Considering its population trend over three generations (c. 10 years), the data presented in Smith et al. (2023) indicate a small increase of c. 6%, albeit with wide confidence intervals. This is broadly consistent with the c. 14% increase recorded by the Breeding Bird Survey (Ziolkowski et al. 2022). Data from Partners in Flight (2023) suggest that the population may have declined by c. 4%, again with wide confidence intervals. Since the 1980s, declines have been noted at some of the salt lakes where this species congregates on passage, probably associated with drought, but evidence for overall population decrease is inconclusive (Colwell and Jehl 2020). Overall, the species' global population trend is suspected to be stable.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Anguilla (to UK) | extant | vagrant | ||||
| Antarctica | extant | vagrant | ||||
| Antigua and Barbuda | extant | vagrant | yes | |||
| Argentina | extant | native | ||||
| Australia | extant | vagrant | ||||
| Bahamas | extant | vagrant | ||||
| Barbados | extant | native | yes | yes | ||
| Belgium | extant | vagrant | ||||
| Belize | extant | native | ||||
| Bermuda (to UK) | extant | vagrant | ||||
| Bolivia | extant | native | ||||
| Bonaire, Sint Eustatius and Saba (to Netherlands) | extant | vagrant | ||||
| Brazil | extant | native | ||||
| Bulgaria | extant | vagrant | ||||
| Canada | extant | native | yes | yes | ||
| Cayman Islands (to UK) | extant | vagrant | ||||
| Chile | extant | native | ||||
| Colombia | extant | native | ||||
| Costa Rica | extant | native | yes | |||
| Côte d'Ivoire | extant | vagrant | ||||
| Curaçao (to Netherlands) | extant | vagrant | ||||
| Czechia | extant | vagrant | ||||
| Denmark | extant | vagrant | ||||
| Dominica | extant | vagrant | ||||
| Dominican Republic | extant | vagrant | ||||
| Ecuador | extant | native | yes | |||
| El Salvador | extant | native | ||||
| Estonia | extant | vagrant | ||||
| Falkland Islands (Malvinas) | extant | vagrant | ||||
| Finland | extant | vagrant | ||||
| France | extant | vagrant | ||||
| Germany | extant | vagrant | ||||
| Greece | extant | vagrant | ||||
| Grenada | extant | vagrant | ||||
| Guadeloupe (to France) | extant | vagrant | yes | |||
| Guatemala | extant | native | ||||
| Haiti | extant | vagrant | ||||
| Honduras | extant | native | ||||
| Iceland | extant | vagrant | ||||
| Ireland | extant | vagrant | ||||
| Italy | extant | vagrant | ||||
| Jamaica | extant | native | yes | yes | ||
| Japan | extant | vagrant | ||||
| Latvia | extant | vagrant | ||||
| Martinique (to France) | extant | vagrant | ||||
| Mexico | extant | native | ||||
| Montserrat (to UK) | extant | vagrant | ||||
| Morocco | extant | vagrant | ||||
| Namibia | extant | vagrant | ||||
| Netherlands | extant | vagrant | ||||
| New Zealand | extant | vagrant | ||||
| Nicaragua | extant | native | ||||
| Norway | extant | vagrant | ||||
| Oman | extant | vagrant | yes | |||
| Panama | extant | native | ||||
| Paraguay | extant | native | ||||
| Peru | extant | native | ||||
| Portugal | extant | vagrant | ||||
| Puerto Rico (to USA) | extant | native | yes | yes | ||
| Sint Maarten (to Netherlands) | extant | vagrant | ||||
| South Africa | extant | vagrant | ||||
| South Georgia & the South Sandwich Islands | extant | vagrant | ||||
| Spain | extant | vagrant | ||||
| Sri Lanka | extant | uncertain | ||||
| St Kitts and Nevis | extant | vagrant | ||||
| St Lucia | extant | vagrant | ||||
| St Pierre and Miquelon (to France) | extant | vagrant | yes | |||
| St Vincent and the Grenadines | extant | vagrant | ||||
| Suriname | extant | native | ||||
| Sweden | extant | vagrant | ||||
| Trinidad and Tobago | extant | vagrant | ||||
| Türkiye | extant | vagrant | ||||
| Turks and Caicos Islands (to UK) | extant | vagrant | ||||
| United Kingdom | extant | vagrant | ||||
| United States Minor Outlying Islands (to USA) | extant | native | ||||
| Uruguay | extant | native | yes | |||
| USA | extant | native | yes | |||
| Venezuela | extant | native | ||||
| Virgin Islands (to UK) | extant | native | yes | yes | ||
| Virgin Islands (to USA) | extant | native | yes | yes |
| Country/Territory | IBA Name |
|---|---|
| Argentina | Reserva de Uso Múltiple Bañados del Río Dulce y Laguna Mar Chiquita |
| Ecuador | Humedales de Pacoa |
| Ecuador | Lagunas de Ecuasal-Salinas |
| Mexico | Lago de Texcoco |
| Paraguay | Lagunas Saladas - Riacho Yacaré |
| USA | Bear River Bay UT02 |
| USA | Farmington Bay UT04 |
| USA | Gilbert Bay/South Arm UT05 |
| USA | Ogden Bay UT03 |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Boreal | suitable | breeding |
| Grassland | Temperate | major | breeding |
| Marine Coastal/Supratidal | Coastal Brackish/Saline Lagoons/Marine Lakes | suitable | non-breeding |
| Marine Intertidal | Mud Flats and Salt Flats | suitable | non-breeding |
| Marine Intertidal | Salt Marshes (Emergent Grasses) | suitable | non-breeding |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | major | breeding |
| Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | major | resident |
| Wetlands (inland) | Permanent Saline, Brackish or Alkaline Lakes | major | non-breeding |
| Wetlands (inland) | Seasonal/Intermittent Freshwater Lakes (over 8ha) | suitable | resident |
| Wetlands (inland) | Seasonal/Intermittent Saline, Brackish or Alkaline Lakes and Flats | suitable | non-breeding |
| Altitude | 0 - 2500 m | Occasional altitudinal limits |
| 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%) | No decline | Low Impact: 5 | ||||||
|
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| Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
| Future | Whole (>90%) | Unknown | Unknown | ||||||
|
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| Energy production & mining | Mining & quarrying | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | No decline | Low Impact: 4 | ||||||
|
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| Natural system modifications | Dams & water management/use - Abstraction of surface water (agricultural use) | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | No decline | Low Impact: 4 | ||||||
|
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| Natural system modifications | Dams & water management/use - Abstraction of surface water (commercial use) | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | No decline | Low Impact: 4 | ||||||
|
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| Natural system modifications | Dams & water management/use - Abstraction of surface water (domestic use) | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | No decline | Low Impact: 4 | ||||||
|
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| Pollution | Agricultural & forestry effluents - Herbicides and pesticides | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | No decline | Low Impact: 4 | ||||||
|
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| Pollution | Industrial & military effluents - Seepage from mining | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | No decline | Low Impact: 4 | ||||||
|
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Recommended citation
BirdLife International (2024) Species factsheet: Wilson's Phalarope Steganopus tricolor. Downloaded from
https://datazone.birdlife.org/species/factsheet/wilsons-phalarope-steganopus-tricolor on 22/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 22/12/2024.