Family: Locustellidae (Grasshopper-warblers and grassbirds)

Authority: (Buller, 1894)

Red List Category

Criteria: D2

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Justification of Red List category
This species has a small population and a restricted range, with the plausible threat of introduced predators driving it to CR or EX in a very short time. It is therefore classified as Vulnerable.

Population size: 2000-3500, 3000 mature individuals

Population trend: stable

Extent of occurrence (breeding/resident): 12 km²

Country endemic: yes