Family: Ardeidae (Herons)

Authority: (Gmelin, 1789)

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 under 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 size may be moderately small to large, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (under 10,000 mature individuals with a continuing decline estimated to be over 10% in ten years or three generations, or with a specified population structure). The population trend appears to be fluctuating, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (over 30% decline over ten years or three generations). For these reasons the species is evaluated as Least Concern.

Population size: 24700-743000 mature individuals

Population trend: stable

Extent of occurrence (breeding/resident): 31,600,000 km²

Country endemic: no

Attributes
Realm - Indomalayan
Realm - Oceanian
Realm - Palearctic
IUCN System - Freshwater
IUCN System - Terrestrial
IUCN System - Marine