VU
Chimney Swift Chaetura pelagica



Taxonomy

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. 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: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - A2acd+3cd+4acd

Red List history
Year Category Criteria
2018 Vulnerable A2acd+3cd+4acd
2016 Near Threatened A2c
2012 Near Threatened A2c
2010 Near Threatened A2c
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status full migrant Forest dependency Low
Land mass type Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 8,580,000 medium
Extent of Occurrence non-breeding (km2) 5,380,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 7700000 medium estimated 2016
Population trend Decreasing medium estimated -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 35 - - -
Decline (10 years/3 generation past and future) 35 - - -
Number of subpopulations - - -
Largest subpopulations - - -
Generation length (yrs) 5.35 - - -

Population justification: The global population has been estimated at 15,000,000 individuals in total (Rich et al. 2004) and 7,700,000 mature individuals, based on estimates from the North American Breeding Bird Survey (Rosenberg et al. 2016) .

Trend justification: Its association with chimneys may have historically allowed the population to expand. However, recent trends show strong population declines. The Partners in Flight Landbird Conservation Plan (Rosenberg et al. 2016) suggest that between 1970 and 2014 the species underwent a population reduction of 67%. Partners in Flight also gives the species a half-life of 27 years (Rosenberg et al. 2016). Extrapolating the population reduction based on short term data from the North American Breeding Bird Survey (Sauer et al. 2017) shows that over the last three generations (16 years), the population has been decreasing with a significant, estimated annual decrease of 2.68% (2.38 to 3.00%) (Sauer et al. 2017). This would equate to a reduction of 35.3% (32.1-38.7%) over three generations


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Anguilla (to UK) V Extant Yes
Aruba (to Netherlands) N Extant
Bahamas N Extant
Barbados V Extant
Belize N Extant Yes
Bermuda (to UK) N Extant
Brazil N Extant Yes
Canada N Extant Yes
Cayman Islands (to UK) N Extant
Chile N Extant
Colombia N Extant
Costa Rica N Extant Yes
Cuba N Extant
Dominican Republic N Extant
Ecuador N Extant
El Salvador N Extant Yes
Greenland (to Denmark) V Extant
Guatemala N Extant
Haiti N Extant
Honduras N Extant
Jamaica V Extant
Mexico N Extant
Nicaragua N Extant
Panama N Extant
Peru N Extant
Portugal V Extant
Puerto Rico (to USA) N Extant
St Pierre and Miquelon (to France) N Extant Yes
Turks and Caicos Islands (to UK) N Extant
United Kingdom V Extant
USA N Extant Yes
Venezuela N Extant
Virgin Islands (to USA) V Extant

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Mexico Calakmul
Mexico Chimalapas
Mexico El Ocote
Mexico Isla Cozumel
Mexico Laguna de Términos
Mexico Los Tuxtlas
Mexico Montes Azules
Mexico Ría Celestún
Mexico Ría Lagartos
Mexico Sierra Chixtontic-Sierra Canjá
Mexico Sierra de Tabasco
Mexico Uxpanapa

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Aquatic & Marine Artificial/Aquatic - Irrigated Land (includes irrigation channels) suitable non-breeding
Artificial/Terrestrial Urban Areas suitable non-breeding
Artificial/Terrestrial Urban Areas 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 Lowland suitable breeding
Forest Temperate suitable non-breeding
Altitude 0 - 3200 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Biological resource use Logging & wood harvesting - Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Reduced reproductive success
Climate change & severe weather Storms & flooding Timing Scope Severity Impact
Ongoing Majority (50-90%) Negligible declines Low Impact: 5
Stresses
Species mortality
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Reduced reproductive success

Recommended citation
BirdLife International (2020) Species factsheet: Chaetura pelagica. Downloaded from http://www.birdlife.org on 19/02/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 19/02/2020.