Millerbird Acrocephalus familiaris

Family: Acrocephalidae (Reed-warblers)

Authority: (Rothschild, 1892)

Red List Category

Criteria: B1ab(iii)+2ab(iii)

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Justification of Red List category
This species has a very restricted range on the islands of Nihoa and Laysan, where habitat degradation is ongoing. These populations are at risk of extinction through exposure to stochastic factors such as severe climatic events or the introduction of invasive species. It is therefore assessed as Endangered.

Population size: 250-999 mature individuals

Population trend: unknown

Extent of occurrence (breeding/resident): 2,100 km2

Country endemic: yes

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

Recommended citation
BirdLife International (2024) Species factsheet: Acrocephalus familiaris. Downloaded from https://datazone.birdlife.org/species/factsheet/millerbird-acrocephalus-familiaris on 01/03/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org on 01/03/2024.