CR
Banggai Crow Corvus unicolor



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Red List Category

Criteria: C2a(i,ii)

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Justification of Red List category
This crow has recently been rediscovered and is listed as Critically Endangered because it is estimated to have an extremely small population, with the majority of individuals in a single subpopulation, and is inferred to be undergoing a continuing decline owing primarily to on-going habitat loss (BirdLife International 2001). Following further surveys, the species's status may need to be re-evaluated.

Population size: 50-249 mature individuals

Population trend: Decreasing

Distribution size (breeding/resident): 270 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: Corvus unicolor. Downloaded from http://www.birdlife.org on 06/12/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 06/12/2016.