Data Zone
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 |
|---|---|---|
| 2024 | 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 | does not normally occur in forest |
| Land-mass type | Average mass | 38 g |
| 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 | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | - | - | - |
| Population trend | stable | - | suspected | - |
| Generation length | 5.58 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). The population is suspected to be stable in the absence of evidence for any declines or substantial threats.
Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Kenya | extant | native | yes | |||
| Somalia | extant | native | yes | |||
| Yemen | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Somalia | Boorama plains |
| Somalia | Hobyo |
| Somalia | Jasiira lagoon and Muqdisho islets |
| Somalia | Jowhar - Warshiikh |
| Somalia | Raas Xaafuun - Raas Gumbax |
| 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 | non-breeding |
| Grassland | Subtropical/Tropical Dry | suitable | 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 | non-breeding |
| Marine Coastal/Supratidal | Coastal Freshwater Lakes | suitable | breeding |
| Marine Coastal/Supratidal | Sea Cliffs and Rocky Offshore Islands | suitable | breeding |
| Rocky areas (eg. inland cliffs, mountain peaks) | major | non-breeding | |
| Rocky areas (eg. inland cliffs, mountain peaks) | major | breeding | |
| Shrubland | Subtropical/Tropical Dry | suitable | non-breeding |
| Shrubland | Subtropical/Tropical Dry | suitable | breeding |
| Altitude | 0 - 1200 m | Occasional altitudinal limits |
Recommended citation
BirdLife International (2024) Species factsheet: Forbes-Watson's Swift Apus berliozi. Downloaded from
https://datazone.birdlife.org/species/factsheet/forbes-watsons-swift-apus-berliozi on 26/11/2024.
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 26/11/2024.