CR
Mariana Crow Corvus kubaryi



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Red List Category

Criteria: A2bcde+3bcde+4bcde;C2a(i,ii)

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Justification of Red List category
This species qualifies as Critically Endangered because surveys have shown that it is declining extremely rapidly. It now has an extremely small population and is effectively confined to just one island where multiple factors are driving the decline. Urgent conservation measures are required to ensure that this species does not become extinct.



Population size: 50-249 mature individuals

Population trend: Decreasing

Distribution size (breeding/resident): 90 km2

Country endemic: No

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: Corvus kubaryi. Downloaded from http://www.birdlife.org on 05/12/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 05/12/2016.