Blue Duck Hymenolaimus malacorhynchos

Family: Anatidae (Ducks, Geese, Swans)

Authority: (Gmelin, 1789)

Red List Category

Criteria: C2a(i)

Click here for more information about the Red List categories and criteria

Justification of Red List category
This species has a small population that is inferred to be declining primarily due to the effects of introduced predators, with no subpopulation exceeding 250 mature individuals. It is therefore classified as Endangered.

Population size: 1500-2499

Population trend: Decreasing

Extent of occurrence (breeding/resident): 199,000 km2

Country endemic: Yes

Land-mass type - oceanic island
Realm - Oceanic
IUCN Ecosystem -- Freshwater biome
IUCN Ecosystem -- Terrestrial biome

Recommended citation
BirdLife International (2023) Species factsheet: Hymenolaimus malacorhynchos. Downloaded from http://www.birdlife.org on 02/04/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 02/04/2023.