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

Taxonomic note
Oxypogon guerinii, O. cyanolaemus, O. lindenii and O. stuebelii (del Hoyo and Collar 2014) were previously lumped as O. guerinii 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
-	C2a(i,ii)	A2c+3c+4c; C2a(i,ii); D1

Red List history

Year	Category	Criteria
2021	Vulnerable	A2c+3c+4c
2016	Vulnerable	D1
2014	Vulnerable	D1
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)	4,200 km2	medium
Area of Occupancy (breeding/resident)	4,228 km2
Number of locations	11-100	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	250-999 mature individuals	poor	suspected	2013
Population trend	decreasing	-	inferred	2017-2027
Rate of change over the past 10 years/3 generations (longer of the two periods)	30-49%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	30-49%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	30-49%	-	-	-
Generation length	2.4 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The population size has not been estimated directly. Even in its preferred habitat the species appears to be patchily distributed, not common and hard to find. While Renjifo et al. (2016) suspect a population size of below 10,000 mature individuals, other studies suspect an even lower size of fewer than 1,000 mature individuals (Collar and Salaman 2013). Precautionarily, the population is placed here in the band 250-999 mature individuals, though this requires confirmation. It is moreover suspected that all individuals belong to the same subpopulation.

Trend justification: No population trend data are available for the species. Habitat loss within the range is difficult to quantify, as the loss of páramo habitat may be exacerbated by degradation (Renjifo et al. 2016). It is estimated that 50.4% of the original páramo habitat within the range have been lost; between 2000 and 2011, the rate of loss amounted to 25.5% (Renjifo et al. 2016). Assuming that this is continuing at the same pace into the future and accounting for additional impacts of habitat degradation, habitat may be lost at a rate of 30-49% over ten years.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Colombia	extant	native	yes

Country/Territory	IBA Name
Colombia	Reserva Hidrográfica, Forestal y Parque Ecológico de Río Blanco

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	marginal	resident
Grassland	Subtropical/Tropical High Altitude	major	resident
Altitude	3000 - 4600 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Small-holder farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Very Rapid Declines		Medium Impact: 7
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Livestock farming & ranching - Small-holder grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Very Rapid Declines		Medium Impact: 7
		Stresses Ecosystem degradation, Ecosystem conversion
Natural system modifications	Fire & fire suppression - Increase in fire frequency/intensity	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Buffy Helmetcrest Oxypogon stuebelii. Downloaded from https://datazone.birdlife.org/species/factsheet/buffy-helmetcrest-oxypogon-stuebelii on 21/12/2024.
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 21/12/2024.