NT
Biak Paradise-kingfisher Tanysiptera riedelii



Family: Alcedinidae (Kingfishers)

Authority: Verreaux, 1866

Red List Category

Criteria: B1b(iii)

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Justification of Red List category
This species is restricted to the twin islands of Biak-Supiori but despite the very small distribution the population size is not suspected to approach thresholds for listing as threatened under Criterion C. The population is suspected to be declining due to an ongoing slow rate of forest cover loss. The extent of occurrence, only 3,600 km2, indicates that the species may be at risk, although the population is not severely fragmented and there are parts of the range where the main threat is not believed to apply. In conjunction with the very small extent of occurrence, the species is considered to approach the thresholds for listing as threatened, meeting Criterion B1b(iii) but not a second subcriterion. Accordingly, Biak Paradise-kingfisher is assessed as Near Threatened.



Population size: unknown

Population trend: decreasing

Extent of occurrence (breeding/resident): 3,600 km2

Country endemic: yes

Attributes
Land-mass type - oceanic island
Realm - Oceanian
IUCN System - Freshwater
IUCN System - Terrestrial

Recommended citation
BirdLife International (2024) Species factsheet: Biak Paradise-kingfisher Tanysiptera riedelii. Downloaded from https://datazone.birdlife.org/species/factsheet/biak-paradise-kingfisher-tanysiptera-riedelii 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.