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

Taxonomic note

Calyptophilus frugivorus and C. tertius (del Hoyo and Collar 2016) were previously lumped as C. frugivorus following Sibley & Monroe (1990, 1993).

 

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
-	-	B1ab(ii,iii,v)

Red List history

Year	Category	Criteria
2021	Vulnerable	B1ab(ii,iii,v)
2016	Vulnerable	C2a(ii)
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	low
Land-mass type		Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	15,100 km2	medium
Number of locations	6-10	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	6700-13300 mature individuals	poor	suspected	2016
Population trend	decreasing	poor	inferred	2016-2026
Rate of change over the past 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	20-29%	-	-	-
Generation length	3.3 years	-	-	-
Number of subpopulations	3	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: The species is described as uncommon to sometimes locally common (Latta et al. 2006). There are no data on population size, but the population is suspected to number 10,000-20,000 individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate is equivalent to 6,667-13,333 mature individuals, rounded here to 6,700-13,300 mature individuals.

The population structure has not been described, but based on observational records (eBird 2020) it is tentatively assumed that the species forms three subpopulations, though their sizes are unknown.

Trend justification: The species is thought to be declining, but the trend has not been quantified directly. Between 2001 and 2019, 12% of tree cover within the range has been lost (Global Forest Watch 2020), which equates to a rate of 6.5% over ten years. As the species has strict requirements for dense, undisturbed forests, it is likely that the rate of forest loss is exacerbated by habitat degradation. The species furthermore suffers from high rates of nest predation (Rimmer et al. 2008). In view of these ongoing threats, it is precautionarily inferred that the population is declining at a rate of 20-29% over ten years, though this requires confirmation.

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

Country/Territory	IBA Name
Dominican Republic	Sierra de Bahoruco National Park
Haiti	Aux Becs-Croisés
Haiti	Aux Cornichons
Haiti	Aux Diablotins
Haiti	Bois Musicien

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Dry	marginal	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Shrubland	Subtropical/Tropical Dry	marginal	resident
Shrubland	Subtropical/Tropical Moist	major	resident
Altitude	800 - 2200 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		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
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
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Felis catus	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Rattus norvegicus	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Reduced reproductive success
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Rattus rattus	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Reduced reproductive success

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Recommended citation
BirdLife International (2024) Species factsheet: Western Chat-tanager Calyptophilus tertius. Downloaded from https://datazone.birdlife.org/species/factsheet/western-chat-tanager-calyptophilus-tertius 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.