• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

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.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2020	Near Threatened	A2cde+3cde+4cde
2016	Near Threatened	A2ce+3ce+4ce
2014	Near Threatened	A2ce+3ce+4ce
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	2,960,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	2009-2024
Rate of change over the past 10 years/3 generations (longer of the two periods)	25-29%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	25-29%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	25-29%	-	-	-
Generation length	4.9 years	-	-	-

Population justification: The overall population size has not been quantified.

Trend justification: The species has undergone very rapid declines at some sites but has increased at others. The overall trend is precautionarily suspected to be a moderately rapid decline over three generations (14.7 years) owing to habitat degradation and the impact of invasive species.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Argentina	extant	native	yes
Bolivia	extant	native	yes
Chile	extant	native	yes
Colombia	extant	native	yes
Ecuador	extant	native	yes
Peru	extant	native	yes

Country/Territory	IBA Name
Chile	Parque Nacional Lauca

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Wetlands (inland)	Permanent Freshwater Lakes (over 8ha)	major	resident
Altitude	3000 - 5000 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Oncorhynchus mykiss	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation
Natural system modifications	Dams & water management/use - Dams (size unknown)	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Rapid Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Pollution	Agricultural & forestry effluents - Soil erosion, sedimentation	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Pollution	Agricultural & forestry effluents - Type Unknown/Unrecorded	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Indirect ecosystem effects, Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Northern Silvery Grebe Podiceps juninensis. Downloaded from https://datazone.birdlife.org/species/factsheet/northern-silvery-grebe-podiceps-juninensis on 22/12/2024.
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 22/12/2024.