LC
Forbes-Watson's Swift Apus berliozi



Taxonomy

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. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
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
Species attributes

Migratory status full migrant Forest dependency does not normally occur in forest
Land-mass type Average mass 38 g
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 1,410,000 km2 medium
Extent of Occurrence (non-breeding) 703,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend stable - suspected -
Generation length 12.5 years - - -

Population justification: The global population size has not been quantified, but the species is reported to be common within its main Socotran breeding site in the Hajhir mountains (del Hoyo et al. 1999).

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Kenya extant native yes
Somalia extant native yes
Yemen extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Somalia Raas Xaafuun - Raas Gumbax
Somalia Boorama plains
Somalia Hobyo
Somalia Jowhar - Warshiikh
Somalia Jasiira lagoon and Muqdisho islets

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Urban Areas suitable non-breeding
Artificial/Terrestrial Urban Areas suitable breeding
Caves and Subterranean Habitats (non-aquatic) Caves major non-breeding
Caves and Subterranean Habitats (non-aquatic) Caves major breeding
Grassland Subtropical/Tropical Dry suitable breeding
Grassland Subtropical/Tropical Dry suitable non-breeding
Grassland Subtropical/Tropical High Altitude suitable non-breeding
Grassland Subtropical/Tropical High Altitude suitable breeding
Marine Coastal/Supratidal Coastal Brackish/Saline Lagoons/Marine Lakes suitable non-breeding
Marine Coastal/Supratidal Coastal Brackish/Saline Lagoons/Marine Lakes suitable breeding
Marine Coastal/Supratidal Coastal Freshwater Lakes suitable breeding
Marine Coastal/Supratidal Coastal Freshwater Lakes suitable non-breeding
Marine Coastal/Supratidal Sea Cliffs and Rocky Offshore Islands suitable breeding
Rocky areas (eg. inland cliffs, mountain peaks) major breeding
Rocky areas (eg. inland cliffs, mountain peaks) major non-breeding
Shrubland Subtropical/Tropical Dry suitable breeding
Shrubland Subtropical/Tropical Dry suitable non-breeding
Altitude 0 - 1200 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2024) Species factsheet: Apus berliozi. Downloaded from https://datazone.birdlife.org/species/factsheet/forbes-watsons-swift-apus-berliozi on 01/03/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org on 01/03/2024.