LC
Pink-headed Warbler Cardellina versicolor



Taxonomy

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.

IUCN Red list criteria met and history
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
Species attributes

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

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 52,900 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 13000-33000 poor estimated 2020
Population trend Decreasing poor suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 1-9 - - -
Decline (10 years/3 generation past and future) 1-9 - - -
Number of subpopulations 2-100 - - -
Percentage in largest subpopulation - - -

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 distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Guatemala N Extant Yes
Mexico N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Guatemala Atitlan
Guatemala Cuilco
Guatemala Yalijux
Guatemala Sierra de las Minas - Motagua
Guatemala Santiaguito Volcano
Guatemala Antigua Guatemala
Guatemala Cuchumatanes
Guatemala Cerro Miramundo
Mexico Cerro Blanco, La Yerbabuena y Jotolchén
Mexico Cerro Saybal - Cerro Cavahlná
Mexico Cerros de Chalchihuitán
Mexico Cerros alrededor de San Cristóbal de Las Casas
Mexico Cordón Jolvit
Mexico El Tacaná
Mexico Montañas del Norte de Chiapas
Mexico Sierra Anover
Mexico Tapalapa
Mexico Jitotol
Mexico Cerro Mozotal - Tacaná
Mexico Montañas de San Cristóbal
Mexico Palenque
Mexico El Triunfo

Habitats & altitude
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  

Threats & impact
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

Recommended citation
BirdLife International (2022) Species factsheet: Cardellina versicolor. Downloaded from http://www.birdlife.org on 10/08/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 10/08/2022.