Family: Acrocephalidae (Reed-warblers)

Authority: Yamashina, 1942

Red List Category

Criteria: B1ab(iii,v)+2ab(iii,v); C2a(ii)

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Justification of Red List category
This species has a very restricted range where there is thought to be an ongoing decline in habitat quality and population size. Additionally, given the threat of the introduction of Brown tree snake Boiga irregularis, it is estimated to occur at only two locations. It is therefore assessed as Endangered.

Population size: 600-5700, 2200-3300 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 2,550 km²

Country endemic: yes