Southern Silvery Grebe (Podiceps occipitalis)

Southern Silvery Grebe Podiceps occipitalis

Current view: Data table and detailed info

Taxonomy

Taxonomic note
Podiceps occipitalis and P. juninensis (del Hoyo and Collar 2014) were previously lumped as P. occipitalis following Sibley and Monroe (1990, 1993).

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

IUCN Red List criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2024	Least Concern
2016	Least Concern
2014	Least Concern
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Species attributes

Migratory status	full migrant	Forest dependency	does not normally occur in forest
Land-mass type		Average mass	-

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	3,460,000 km²	medium
Extent of Occurrence (non-breeding)	5,200,000 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	67700-68500 mature individuals	-	-	2023
Population trend	stable	-	suspected	-
Generation length	4.07 years	-	-	-

Population justification: The global population size is estimated at 101,500-102,700 individuals (Wetlands International 2023), which equates to 67,700-68,500 mature individuals. The overall population trend is considered to be stable over three generations (12.21 years) (Wetlands International 2023).

Trend justification: .

Country/territory distribution

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor
Argentina	extant	native	yes	yes	yes
Bolivia	extant	native			yes
Chile	extant	native	yes	yes	yes
Falkland Islands (Malvinas)	extant	native	yes
Paraguay	extant	native			yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name
Argentina	Bañados del Río Atuel
Argentina	Lagunas del suroeste y relictos del Caldenal
Argentina	Lagunas Encadenadas del Oeste de la Provincia de Buenos Aires
Chile	Humedal de Batuco

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Marine Neritic	Pelagic	marginal	non-breeding
Wetlands (inland)	Permanent Freshwater Lakes (over 8ha)	major	resident
Wetlands (inland)	Permanent Saline, Brackish or Alkaline Lakes	suitable	non-breeding
Altitude	0 - 4700 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: Southern Silvery Grebe Podiceps occipitalis. Downloaded from https://datazone.birdlife.org/species/factsheet/southern-silvery-grebe-podiceps-occipitalis on 23/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 23/11/2024.