Data Zone
Taxonomic note
Setophaga castanea (del Hoyo and Collar 2016) was previously placed in the genus Dendroica 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.
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 | |
| 2018 | 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 | 12 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 4,130,000 km2 | medium |
| Extent of Occurrence (non-breeding) | 1,330,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 9900000 mature individuals | poor | estimated | 2019 |
| Population trend | increasing | - | estimated | - |
| Rate of change over the past 10 years/3 generations (longer of the two periods) | 24% | - | - | - |
| Generation length | 2.38 years | - | - | - |
Population justification: The global population is estimated to number 9.9 million mature individuals (Partners in Flight 2019).
Trend justification: The species has been undergoing a small decline at an average rate of 0.5% per year between 1970 and 2017 (Partners in Flight 2019; Rosenberg et al. 2019). Short-term trends however suggest that this decline is historical; the population has been increasing by 24% 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 |
|---|---|---|---|---|---|---|
| Aruba (to Netherlands) | extant | vagrant | yes | |||
| Bahamas | extant | native | yes | |||
| Belize | extant | native | yes | |||
| Bermuda (to UK) | extant | vagrant | ||||
| Canada | extant | native | yes | yes | ||
| Cayman Islands (to UK) | extant | native | yes | |||
| Colombia | extant | native | yes | |||
| Costa Rica | extant | native | yes | yes | ||
| Cuba | extant | native | yes | |||
| Dominican Republic | extant | vagrant | yes | |||
| Ecuador | extant | vagrant | yes | |||
| Greenland (to Denmark) | extant | vagrant | ||||
| Guadeloupe (to France) | extant | vagrant | yes | |||
| Guatemala | extant | native | yes | |||
| Haiti | extant | vagrant | yes | |||
| Honduras | extant | native | yes | |||
| Jamaica | extant | native | yes | |||
| Mexico | extant | native | yes | |||
| Nicaragua | extant | native | yes | yes | ||
| Panama | extant | native | yes | yes | ||
| Portugal | extant | vagrant | ||||
| Puerto Rico (to USA) | extant | vagrant | yes | |||
| St Pierre and Miquelon (to France) | extant | vagrant | yes | |||
| Trinidad and Tobago | extant | vagrant | yes | |||
| Turks and Caicos Islands (to UK) | extant | native | yes | |||
| United Kingdom | extant | vagrant | ||||
| USA | extant | native | yes | yes | ||
| Venezuela | extant | native | yes |
| Country/Territory | IBA Name |
|---|
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Boreal | major | breeding |
| Forest | Subtropical/Tropical Moist Lowland | major | non-breeding |
| Forest | Temperate | suitable | breeding |
| Altitude | Occasional altitudinal limits |
Recommended citation
BirdLife International (2024) Species factsheet: Bay-breasted Warbler Setophaga castanea. Downloaded from
https://datazone.birdlife.org/species/factsheet/bay-breasted-warbler-setophaga-castanea on 27/11/2024.
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 27/11/2024.