VU
Henderson Crake Zapornia atra



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Red List Category

Criteria: D2

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Justification of Red List category
This species qualifies as Vulnerable as it is only found on one small island. The accidental introduction of alien species could result in rapid population decline, or even extinction, as experienced by many other flightless island rails.

Population size: 9300 mature individuals

Population trend: Stable

Distribution size (breeding/resident): 41 km2

Country endemic: Yes

Attributes
Land-mass type - oceanic island - Oceanic islands are islands or island groups that are <200,000 sq km in size and separated from other land masses by >200 m sea depth. Generally Oceanic islands are islands or island groups that are <200,000 sq km in size and separated from other land masses by >200 m sea depth. Generally they have never been connected to a continental area by a land-ridge, and are volcanic in origin.
Realm - Oceanic - realm
IUCN Ecosystem -- Terrestrial biome

Recommended citation
BirdLife International (2016) Species factsheet: Zapornia atra. Downloaded from http://www.birdlife.org on 04/12/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 04/12/2016.