Data Zone
Taxonomic note
Antrostomus carolinensis (del Hoyo and Collar 2014) was previously placed in the genus Caprimulgus.
Taxonomic source(s)
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.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2020 | Near Threatened | A2ace+3ce+4ace |
| 2018 | Near Threatened | A2ace+3ce+4ace |
| 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 | 109 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 3,570,000 km2 | medium |
| Extent of Occurrence (non-breeding) | 7,160,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 5700000 mature individuals | poor | estimated | 2019 |
| Population trend | decreasing | - | estimated | 2012-2024 |
| Rate of change over the past 10 years/3 generations (longer of the two periods) | 20-29% | - | - | - |
| Rate of change over the future 10 years/3 generations (longer of the two periods) | 20-29% | - | - | - |
| Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 20-29% | - | - | - |
| Generation length | 4.01 years | - | - | - |
Population justification: Partners in Flight (2019) estimated the global population of mature individuals at 5,700,000.
Trend justification:
Partners in Flight (2019) estimate the population of A. carolinensis to be declining at 2.275% per year, which equates to a ~24% decline over the last three generations (12 years). Similar declining trends are further supported by Rosenberg et al. (2016), the Christmas Bird Count (T. Meehan in litt. 2018) and the North American Breeding Bird Survey (Sauer et al. 2017). As a result, current declines are placed in the range 20-29% over three generations.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Antigua and Barbuda | extant | native | yes | |||
| Aruba (to Netherlands) | extant | native | yes | |||
| Bahamas | extant | native | yes | yes | ||
| Barbados | extant | native | yes | |||
| Belize | extant | native | yes | |||
| Bonaire, Sint Eustatius and Saba (to Netherlands) | extant | native | yes | |||
| Canada | extant | native | yes | |||
| Cayman Islands (to UK) | extant | native | yes | |||
| Colombia | extant | native | yes | |||
| Costa Rica | extant | native | yes | |||
| Cuba | extant | native | yes | |||
| Dominica | extant | native | yes | |||
| Dominican Republic | extant | native | yes | |||
| El Salvador | extant | native | yes | |||
| Guatemala | extant | native | yes | |||
| Haiti | extant | native | yes | |||
| Honduras | extant | native | yes | |||
| Jamaica | extant | vagrant | ||||
| Martinique (to France) | extant | native | yes | |||
| Mexico | extant | native | yes | |||
| Montserrat (to UK) | extant | native | yes | |||
| Nicaragua | extant | native | yes | |||
| Panama | extant | native | yes | |||
| Puerto Rico (to USA) | extant | native | yes | |||
| St Kitts and Nevis | extant | native | yes | |||
| St Lucia | extant | native | yes | |||
| St Pierre and Miquelon (to France) | extant | vagrant | yes | |||
| St Vincent and the Grenadines | extant | native | yes | |||
| Turks and Caicos Islands (to UK) | extant | native | yes | |||
| USA | extant | native | yes | yes | yes | |
| Venezuela | extant | native | yes | |||
| Virgin Islands (to UK) | extant | native | yes | |||
| Virgin Islands (to USA) | extant | native | yes |
| Country/Territory | IBA Name |
|---|
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Terrestrial | Pastureland | suitable | breeding |
| Caves and Subterranean Habitats (non-aquatic) | Caves | marginal | non-breeding |
| Forest | Subtropical/Tropical Dry | suitable | non-breeding |
| Forest | Subtropical/Tropical Dry | suitable | breeding |
| Forest | Temperate | suitable | breeding |
| Grassland | Temperate | suitable | breeding |
| Shrubland | Subtropical/Tropical Dry | suitable | non-breeding |
| Shrubland | Temperate | suitable | breeding |
| Altitude | 0 - 2600 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Human intrusions & disturbance | Recreational activities | 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%) | Unknown | Unknown | ||||||
|
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| Residential & commercial development | Housing & urban areas | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Transportation & service corridors | Roads & railroads | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Recommended citation
BirdLife International (2024) Species factsheet: Chuck-will's-widow Antrostomus carolinensis. Downloaded from
https://datazone.birdlife.org/species/factsheet/chuck-wills-widow-antrostomus-carolinensis on 27/12/2024.
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 27/12/2024.