Family: Podicipedidae (Grebes)

Authority: Rumboll, 1974

Red List Category

Criteria: A2abce+4ace

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Justification of Red List category
This species's population size has declined rapidly over the past three generations and it therefore qualifies as Critically Endangered. It appears from recent counts that the population is now stable, probably as a result of extensive conservation actions. If evidence continues to show that the population remains stable, the species may be downlisted to a lower category of threat in the future.

BirdLife Species Champion: Ben Olewine and Steve & Britt Thal

BirdLife Species Guardian: Aves Argentina (AOP)

Population size: 650-800 mature individuals

Population trend: stable

Extent of occurrence (breeding/resident): 47,300 km²

Country endemic: yes

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