Family: Pellorneidae (Ground babblers)

Authority: (Bonaparte, 1850)

Red List Category

Criteria: B1b(iii)

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Justification of Red List category
For a long time this species was considered one of Asia's greatest avian enigmas, known from just a single specimen collected between 1843 and 1848, at an unknown locality somewhere in southern Borneo. It was rediscovered in 2020, more than 170 years after the holotype was collected. It has since been found at several sites in eastern South Kalimantan, Indonesia, where it appears to be tied to forest on limestone karst, in a relatively small area east of the Meratus Range. Despite its small range, the perceived extinction risk is relatively low given its preference (and indeed dependence) on rugged forests which are not easily exploited. Nonetheless, there is evidence of some degradation by quarrying and localised subsistence timber extraction. Accordingly, it is evaluated as Near Threatened.

Population size: unknown

Population trend: decreasing

Extent of occurrence (breeding/resident): 3,500 km²

Country endemic: yes

Attributes
Land-mass type - shelf island
Realm - Indomalayan
IUCN System - Terrestrial