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

Taxonomic note

Cardellina versicolor (del Hoyo and Collar 2016) was previously placed in the genus Ergaticus following AOU (1998 & supplements); Sibley and Monroe (1990, 1993); Stotz et al. (1996).

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2020	Least Concern
2016	Vulnerable	B1ab(i,ii,iii,v)
2012	Vulnerable	B1ab(i,ii,iii,v)
2008	Vulnerable	B1a+b(i,ii,iii,v)
2004	Vulnerable
2000	Vulnerable
1994	Lower Risk/Near Threatened
1988	Lower Risk/Least Concern

Migratory status	not a migrant	Forest dependency	high
Land-mass type	continent	Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	52,900 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	13000-33000 mature individuals	poor	estimated	2020
Population trend	decreasing	poor	suspected	2014-2024
Rate of change over the past 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Generation length	2.4 years	-	-	-
Number of subpopulations	2-100	-	-	-

Population justification: The global population is thought to number 20,000-50,000 individuals (Curson 2020), which roughly equates to 13,000-33,000 mature individuals. In Guatemala, the species is common in oak-alder-conifer forest above the elevation of 2,300 m, but less common in cloud forests at the same elevation. In high-elevation (2,000-2,500 m) cloud forest on the Atlantic slope, a density of 0.25 individuals/ha was estimated. The total population in IBAs in Guatemala is assumed to be between 19,000 and 54,000 individuals (K. Eisermann unpubl. data). In Mexico, density estimates range from 0.12 to 3.7 individuals/km² (Partida-Lara et al. 2020). Data quality is poor, and the total population is likely larger than estimated.

Trend justification: The population trend for this species has not been directly estimated, but the species is suspected to be in slow decline owing to habitat degradation. Forest cover within the range has been lost at a rate of 3% over the past ten years (Global Forest Watch 2020). The species prefers undisturbed forest, but appears to tolerate edges and degraded habitat. Therefore, while it may be possible to consider the species to be in decline, the rate of population decline is unlikely to exceed the rate of forest loss, and is here tentatively placed in the band 1-9% over ten years.

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

Country/Territory	IBA Name
Guatemala	Antigua Guatemala
Guatemala	Atitlan
Guatemala	Cerro Miramundo
Guatemala	Cuchumatanes
Guatemala	Cuilco
Guatemala	Santiaguito Volcano
Guatemala	Sierra de las Minas - Motagua
Guatemala	Yalijux
Mexico	Cerro Blanco, La Yerbabuena y Jotolchén
Mexico	Cerro Saybal - Cerro Cavahlná
Mexico	Cerros de Chalchihuitán
Mexico	Cordón Jolvit
Mexico	Sierra Anover

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Subtropical/Tropical Heavily Degraded Former Forest	marginal	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	1800 - 3500 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Scale Unknown/Unrecorded	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Annual & perennial non-timber crops - Small-holder farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Livestock farming & ranching - Small-holder grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Gathering terrestrial plants - Unintentional effects (species is not the target)	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Species disturbance
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation
Energy production & mining	Mining & quarrying	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Species disturbance, Ecosystem degradation, Ecosystem conversion
Geological events	Volcanoes	Timing		Scope		Severity		Impact
		Past, Likely to Return		Minority (<50%)		Slow, Significant Declines		Past Impact
		Stresses Ecosystem degradation, Ecosystem conversion
Human intrusions & disturbance	Work & other activities	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Species disturbance
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Canis familiaris	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Unknown		Unknown
		Stresses Species disturbance, Reduced reproductive success
Transportation & service corridors	Roads & railroads	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Pink-headed Warbler Cardellina versicolor. Downloaded from https://datazone.birdlife.org/species/factsheet/pink-headed-warbler-cardellina-versicolor on 25/11/2024.
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 25/11/2024.