NT
Forest Bittern Zonerodius heliosylus



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Red List Category

Criteria: A2c+3c+4c;C1

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Justification of Red List category
This species qualifies as Near Threatened because it has a moderately small population which is thought to be undergoing a moderate decline owing to habitat degradation.

Population size: 1500-7000 mature individuals

Population trend: Decreasing

Distribution size (breeding/resident): 652,000 km2

Country endemic: No

Attributes
Land-mass type - shelf island - Continental islands include all other islands or island groups. Generally they were once part of continents and lie on a continental shelf of < 200 m sea depth.
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 -- Freshwater biome
IUCN Ecosystem -- Terrestrial biome

Recommended citation
BirdLife International (2016) Species factsheet: Zonerodius heliosylus. 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.