Data Zone
Taxonomic note
Cardellina pusilla (del Hoyo and Collar 2016) was previously placed in the genus Wilsonia following AERC TAC (2003); AOU (1998 & supplements); Cramp et al. (1977-1994); SACC (2005 & updates); Sibley & Monroe (1990, 1993); Stotz et al. (1996).
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.
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., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and 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.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2021 | 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 | medium |
| Land-mass type | Average mass | 7 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 19,600,000 km2 | medium |
| Extent of Occurrence (non-breeding) | 4,260,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 81000000 mature individuals | poor | estimated | 2019 |
| Population trend | decreasing | - | estimated | - |
| Rate of change over the past 10 years/3 generations (longer of the two periods) | 10% | - | - | - |
| Generation length | 2.03 years | - | - | - |
Population justification: The global population is estimated to number 81 million mature individuals (Partners in Flight 2019).
Trend justification: The species is undergoing a large, significant decline (Partners in Flight 2019; Rosenberg et al. 2019). Short-term trends suggest that the population has declined by 10% over the past ten years, though this value is non-significant (Pardieck et al. 2018).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Bahamas | extant | vagrant | yes | |||
| Belize | extant | native | yes | |||
| Bermuda (to UK) | extant | vagrant | yes | |||
| Canada | extant | native | yes | yes | ||
| Cayman Islands (to UK) | extant | vagrant | yes | |||
| Colombia | extant | vagrant | yes | |||
| Costa Rica | extant | native | yes | yes | ||
| Cuba | extant | vagrant | yes | |||
| Dominican Republic | extant | vagrant | yes | |||
| Ecuador | extant | vagrant | yes | |||
| El Salvador | extant | native | yes | |||
| Greenland (to Denmark) | extant | vagrant | ||||
| Guatemala | extant | native | yes | |||
| Haiti | extant | vagrant | yes | |||
| Honduras | extant | native | yes | |||
| Jamaica | extant | vagrant | yes | |||
| Mexico | extant | native | yes | yes | ||
| Nicaragua | extant | native | yes | yes | ||
| Panama | extant | native | yes | yes | ||
| Puerto Rico (to USA) | extant | vagrant | yes | |||
| St Pierre and Miquelon (to France) | extant | vagrant | yes | |||
| United Kingdom | extant | vagrant | yes | |||
| USA | extant | native | yes | yes | yes |
| Country/Territory | IBA Name |
|---|
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Terrestrial | Arable Land | suitable | non-breeding |
| Artificial/Terrestrial | Pastureland | suitable | non-breeding |
| Artificial/Terrestrial | Plantations | suitable | non-breeding |
| Artificial/Terrestrial | Rural Gardens | suitable | non-breeding |
| Forest | Boreal | suitable | breeding |
| Forest | Subtropical/Tropical Mangrove Vegetation Above High Tide Level | suitable | non-breeding |
| Forest | Subtropical/Tropical Moist Lowland | suitable | non-breeding |
| Forest | Subtropical/Tropical Moist Montane | suitable | non-breeding |
| Forest | Temperate | suitable | breeding |
| Grassland | Subtropical/Tropical Dry | suitable | non-breeding |
| Grassland | Subtropical/Tropical High Altitude | suitable | non-breeding |
| Grassland | Subtropical/Tropical Seasonally Wet/Flooded | suitable | non-breeding |
| Grassland | Temperate | suitable | breeding |
| Shrubland | Boreal | suitable | breeding |
| Shrubland | Subarctic | suitable | non-breeding |
| Shrubland | Subtropical/Tropical High Altitude | suitable | non-breeding |
| Shrubland | Subtropical/Tropical Moist | suitable | non-breeding |
| Shrubland | Temperate | suitable | breeding |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | suitable | breeding |
| Wetlands (inland) | Shrub Dominated Wetlands | suitable | breeding |
| Altitude | 0 - 3500 m | Occasional altitudinal limits |
| Purpose | Scale |
|---|---|
| Pets/display animals, horticulture | international |
Recommended citation
BirdLife International (2024) Species factsheet: Wilson's Warbler Cardellina pusilla. Downloaded from
https://datazone.birdlife.org/species/factsheet/wilsons-warbler-cardellina-pusilla on 24/11/2024.
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 24/11/2024.