White-headed Steamerduck Tachyeres leucocephalus

Family: Anatidae (Ducks, Geese, Swans)

Authority: Humphrey & Thompson, 1981

Red List Category

Criteria: C2a(ii)

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

Justification of Red List category
This species was previously classified as Near Threatened as, although it has a single, small population, it was not thought to be declining. It is now thought to be experiencing a continuing decline owing to deteriorating habitat quality, and probable decreases in survival and breeding success, as caused by human activities and other problematic species, and it has therefore been uplisted to Vulnerable.

Population size: 3400-3700

Population trend: Decreasing

Extent of occurrence (breeding/resident): 130,000 km2

Country endemic: Yes

Land-mass type - continent
Realm - Neotropical
IUCN Ecosystem -- Marine biome

Recommended citation
BirdLife International (2021) Species factsheet: Tachyeres leucocephalus. Downloaded from on 03/12/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from on 03/12/2021.