Family: Acrocephalidae (Reed-warblers)

Authority: (Murphy & Mathews, 1929)

Red List Category

Criteria: B1ab(iii,v)

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Justification of Red List category
This species is listed as Critically Endangered because it has an extremely small range on one island and is considered to be undergoing a decline as a result of habitat destruction and invasive species.

Population size: 600-2600

Population trend: Decreasing

Extent of occurrence (breeding/resident): 7 km²

Country endemic: Yes

Attributes
Land-mass type - oceanic island
Realm - Oceanic
IUCN Ecosystem -- Freshwater biome
IUCN Ecosystem -- Terrestrial biome