VU
Azure-rumped Tanager Tangara cabanisi



Taxonomy

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
- - C2a(ii)

Red List history
Year Category Criteria
2020 Vulnerable C2a(ii)
2016 Endangered B1ab(i,ii,iii,v)
2013 Endangered B1ab(i,ii,iii,v)
2012 Endangered B1ab(i,ii,iii,v)
2008 Endangered B1a+b(i,ii,iii,v)
2004 Endangered
2000 Endangered
1996 Endangered
1994 Endangered
1988 Threatened
Species attributes

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

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 10,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 6000-17000 poor estimated 2019
Population trend Decreasing poor inferred -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 10-15 - - -
Decline (10 years/3 generation past and future) 10-15 - - -
Number of subpopulations 1 - - -
Percentage in largest subpopulation 100 - - -

Population justification: Surveys carried out in broadleaf forest in Guatemala found a density of 33-93 individuals per km2; based on this density the population in Guatemala was estimated to number 8,250-23,250 individuals (Eisermann et al. 2011a). However, the densities used in this calculation were estimated from surveys at 1,400-1,900 m, where the species is more abundant than at 900-1,300 m, and the density estimates may have been affected by the patchy nature of forest in the survey areas (see Eisermann et al. 2011a). The relative abundance in Mexico was found to be lower; surveys at El Triunfo Biosphere Reserve recorded only 0.84 individuals per km2 (Secretaría de Medio Ambiente, Vivienda e Historia Natural 2011, Enríquez et al. 2013, P. Enríquez in litt. 2019). Assuming that the population in Guatemala is much larger than the population in Mexico, the global population is tentatively placed in the band of c.10,000-25,000 individuals. This roughly equates to 6,000-17,000 mature individuals. The map of sightings of this species on eBird (eBird 2019) suggests that the species occurs in either one or two subpopulations. If it were to be considered as two subpopulations, then the largest subpopulation would probably contain significantly greater than 1,000 mature individuals. Unless new information becomes available, the species is precautionarily assumed to occur in only one subpopulation.

Trend justification: The species is thought to be in moderate decline owing to habitat loss, primarily for coffee cultivation. The population trend for this species has not been directly estimated. The rate of habitat loss within the range is placed in the band 10-15% over ten years (K. Eisermann in litt. 2019). The species is precautionarily inferred to undergo a slow population decline.


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 Tacana - Tajumulco
Guatemala Santiaguito Volcano
Mexico El Tacaná
Mexico Peña Blanca
Mexico Subcuenca Lago del Viejo
Mexico Cerro Mozotal - Tacaná
Mexico Montebello II
Mexico El Triunfo

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Moist Montane major resident
Altitude 1000 - 1700 m Occasional altitudinal limits 860 - 1900 m

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 Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion
Climate change & severe weather Storms & flooding Timing Scope Severity Impact
Ongoing Minority (<50%) Causing/Could cause fluctuations Low Impact: 5
Stresses
Ecosystem degradation
Energy production & mining Mining & quarrying Timing Scope Severity Impact
Future Minority (<50%) Causing/Could cause fluctuations Low Impact: 3
Stresses
Ecosystem degradation
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 conversion
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Minority (<50%) Causing/Could cause fluctuations Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Pets/display animals, horticulture - - International Non-trivial Recent

Recommended citation
BirdLife International (2022) Species factsheet: Tangara cabanisi. Downloaded from http://www.birdlife.org on 10/12/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 10/12/2022.