VU
Sumba Hornbill Rhyticeros everetti



Search terms 

Red List Category

Criteria: A2cd+3cd+4cd;B1ab(ii,iii,iv,v);C1+2a(ii)

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Justification of Red List category
This species qualifies as Vulnerable because it has a small population and a small range which is severely fragmented, both of which are declining owing to rapid forest loss. However, it has been proposed that the population size is lower than suggested here and that it may undergo extremely rapid population declines in the future; hence a higher threat category may be warranted.

Population size: 2500-9999 mature individuals

Population trend: Decreasing

Distribution size (breeding/resident): 10,700 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: Rhyticeros everetti. 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.