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 |
|---|---|---|
| 2022 | Near Threatened | C2a(ii) |
| 2016 | Near Threatened | C1+2a(i) |
| 2012 | Near Threatened | C1+2a(i) |
| 2008 | Near Threatened | C1; C2a(i) |
| 2004 | Near Threatened | |
| 2000 | Lower Risk/Near Threatened | |
| 1996 | Vulnerable | |
| 1994 | Vulnerable | |
| 1988 | Threatened |
| Migratory status | not a migrant | Forest dependency | low |
| Land-mass type |
continent |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 3,200,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 2500-9999 mature individuals | poor | suspected | 2022 |
| Population trend | decreasing | poor | suspected | 1998-2008 |
| Generation length | 2.8 years | - | - | - |
| Number of subpopulations | 1 | - | - | - |
| Percentage of mature individuals in largest subpopulation | 100% | - | - | - |
Population justification: The global population size has not been accurately quantified, although the species is suspected of having a moderately small population, comprising no more than 10,000 mature individuals. In China, Brazil (2009) suspected there to be fewer than 100 breeding pairs. Despite being mapped as relatively widespread in South-East Asia, there are very few records (eBird 2022) with most observations of the species coming from a comparatively small area in north-east India.
Trend justification: Precise data on trends of this species are lacking. However, deforestation along watercourses, especially in South-East Asia, is suspected of causing declines in this strictly forest-dependent species. Moreover, it may be impacted by riverine pollution and disturbance.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Bangladesh | extant | vagrant | yes | |||
| Bhutan | extant | native | yes | |||
| China (mainland) | extant | native | yes | |||
| India | extant | native | yes | |||
| Laos | extant | native | yes | |||
| Myanmar | extant | native | yes | |||
| Nepal | extant | vagrant | yes | |||
| Thailand | extant | native | yes | |||
| Vietnam | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| China (mainland) | Chebaling Nature Reserve |
| China (mainland) | Meihua Shan Nature Reserve |
| China (mainland) | Tongbiguan |
| China (mainland) | Xishuangbanna |
| Laos | Eastern Bolikhamxay Mountains |
| Laos | Nakai Plateau |
| Laos | Nakai-Nam Theun |
| Laos | Nam Et |
| Laos | Nam Xam |
| Laos | Phou Dendin |
| Laos | Phou Loeuy |
| Laos | Xe Sap |
| Thailand | Mae Fang |
| Thailand | Nong Bong Kai |
| Vietnam | Chu Yang Sin |
| Vietnam | Ke Go |
| Vietnam | Kon Cha Rang |
| Vietnam | Pu Mat |
| Vietnam | Vu Quang |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Lowland | suitable | resident |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | major | resident |
| Altitude | 400 - 1000 m | Occasional altitudinal limits | 200 - 1200 m |
| 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%) | Negligible declines | Low Impact: 5 | ||||||
|
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| Human intrusions & disturbance | Work & other activities | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Unknown | Unknown | ||||||
|
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| Pollution | Industrial & military effluents - Type Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Unknown | Unknown | ||||||
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Recommended citation
BirdLife International (2024) Species factsheet: Blyth's Kingfisher Alcedo hercules. Downloaded from
https://datazone.birdlife.org/species/factsheet/blyths-kingfisher-alcedo-hercules 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.