Data Zone
Justification of Red List category
This species exists at naturally low numbers as a result of its narrow habitat requirements, thus it is suspected of having a moderately small population. It is likely to be declining as a result of habitat loss and fragmentation throughout its range and is therefore listed as Near Threatened.
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.
This species occurs in southern China including Hainan Island (rare), eastern Nepal (vagrant), Bhutan (rare), north-east India (rare), Bangladesh (vagrant), Myanmar (scarce to fairly common in the north, west and south), north-west Thailand (very rare visitor), Laos (uncommon to locally common in the north and Annamite mountains, scarce further south) and Viet Nam (locally fairly common in west Tonkin and Annam). Given its linear distribution along rivers, and thus restricted range, the total population size is possibly moderately small.
This species is found along streams in evergreen forest at 200-1,200 m, but mainly at 400-1,000 m.
This species is still widespread at low densities within its historical range, although deforestation is reducing and fragmenting its habitat, and human disturbance and river pollution are possibly also threats.
Conservation Actions Underway
None are known.
Conservation Actions Proposed
Conduct repeated surveys throughout its range to clarify its current population status, as well as assess population trends and rates of range contraction. Conduct ecological studies to identify habitat associations and potential threats. Grant protection to areas of suitable habitat. Enforce laws against river pollution where applicable. Strengthen legislation against aquatic pollution throughout the species' range.
Text account compilers
Berryman, A.
Contributors
Fen-qi, H.
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 23/11/2024.
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 23/11/2024.