Swan Goose Anser cygnoid

Family: Anatidae (Ducks, Geese, Swans)

Authority: (Linnaeus, 1758)

Red List Category

Criteria: A4bcd

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Justification of Red List category
This well-known species is listed as Endangered because of a suite of threats affecting it on the breeding and non-breeding grounds. In particular, on the breeding grounds it is impacted by disturbance and climate change induced droughts, and potentially other factors that render breeding productivity low. An increasing majority of this species' global population now winters at Poyang Lake, where birds are subject to a range of threats, including ongoing hydrological issues caused by the Three Gorges Dam, sand mining and climate change. Here, pollution is also believed to have had impacts on the species' ability to feed and the increasing congregation of birds here is a potential disease risk.

Population size: 36000-43500 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 3,940,000 km2

Country endemic: no

Land-mass type - continent
Realm - Indomalayan
Realm - Palearctic
IUCN Ecosystem -- Freshwater biome
IUCN Ecosystem -- Terrestrial biome
IUCN Ecosystem -- Marine biome

Recommended citation
BirdLife International (2023) Species factsheet: Anser cygnoid. Downloaded from http://datazone.birdlife.org/species/factsheet/swan-goose-anser-cygnoid on 11/12/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 11/12/2023.