LC
Western Marsh-harrier Circus aeruginosus



Family: Accipitridae (Hawks, Eagles)

Authority: (Linnaeus, 1758)

Red List Category

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Justification of Red List category
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over 10 years or three generations). The population size is very large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in 10 years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

Population size: 600000-1100000 mature individuals

Population trend: stable

Extent of occurrence (breeding/resident): 24,800,000 km2

Country endemic: no

Attributes
Realm - Afrotropical
Realm - Indomalayan
Realm - Palearctic
IUCN Ecosystem -- Freshwater biome
IUCN Ecosystem -- Terrestrial biome
IUCN Ecosystem -- Marine biome
Raptors MOU

Recommended citation
BirdLife International (2024) Species factsheet: Circus aeruginosus. Downloaded from https://datazone.birdlife.org/species/factsheet/western-marsh-harrier-circus-aeruginosus on 19/03/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org on 19/03/2024.