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 |
---|---|---|
2016 | Near Threatened | C1 |
2012 | Near Threatened | C1 |
2008 | Near Threatened | C1 |
2004 | Near Threatened | |
2000 | Lower Risk/Near Threatened | |
1994 | Lower Risk/Near Threatened | |
1988 | Threatened |
Migratory status | not a migrant | Forest dependency | high |
Land-mass type |
continent |
Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 2,130,000 km2 | medium |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | unknown | - | - | - |
Population trend | decreasing | poor | suspected | 2005-2027 |
Rate of change over the past 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
Rate of change over the future 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
Generation length | 7.2 years | - | - | - |
Population justification: The global population size has not been quantified, but the species is described as rare and local (del Hoyo et al. 1999).
Trend justification: This species is extremely poorly known, but several colonies have apparently declined or disappeared in recent years, suggesting that population size may be falling. This is likely to be related to forest loss in areas surrounding breeding colonies. A slow decline is suspected overall.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Indonesia | extant | native | yes | |||
Malaysia | extant | native | yes |
Country/Territory | IBA Name |
---|---|
Indonesia | Gunung Gede - Pangrango |
Indonesia | Gunung Halimun |
Indonesia | Gunung Masigit-Kareumbi |
Indonesia | Gunung Salak |
Indonesia | Kerinci Seblat |
Indonesia | Meru Betiri |
Malaysia | Central Titiwangsa Range |
Malaysia | Lanjak Entimau Wildlife Sanctuary |
Malaysia | Selangor Heritage Park |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Moist Montane | major | resident |
Rocky areas (eg. inland cliffs, mountain peaks) | major | breeding | |
Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | major | resident |
Altitude | 300 - 1500 m | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Agriculture & aquaculture | Annual & perennial non-timber crops - Agro-industry farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
|||||||||
Agriculture & aquaculture | Annual & perennial non-timber crops - Small-holder farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
Biological resource use | Logging & wood harvesting - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
|||||||||
Transportation & service corridors | Roads & railroads | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
Recommended citation
BirdLife International (2024) Species factsheet: Waterfall Swift Hydrochous gigas. Downloaded from
https://datazone.birdlife.org/species/factsheet/waterfall-swift-hydrochous-gigas on 23/12/2024.
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 23/12/2024.