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

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
-	-	D1

Red List history

Year	Category	Criteria
2021	Vulnerable	D1
2018	Vulnerable	B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v); C2a(i)
2016	Endangered	B1ab(i,ii,iii,iv,v)
2012	Endangered	B1ab(i,ii,iii,iv,v)
2008	Endangered	B1a+b(i,ii,iii,iv,v)
2004	Endangered
2000	Endangered
1996	Vulnerable
1994	Vulnerable
1988	Near Threatened

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	17,300 km2	medium
Area of Occupancy (breeding/resident)	6,664 km2
Number of locations	11-100	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	490-7630 mature individuals	poor	estimated	2021
Population trend	decreasing	poor	suspected	2017-2028
Rate of change over the past 10 years/3 generations (longer of the two periods)	1-19%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	1-19%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	1-19%	-	-	-
Generation length	3.72 years	-	-	-
Number of subpopulations	2-100	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification:

This species is described as locally common in appropriate habitat (Collar et al. 1992). Based on this, and taking the lower quartiles of density estimates of congeners, the Cocoa Thrush Turdus fumigatus and White-necked Thrush Turdus albicollis, of 1.1-17 individuals/sqkm (BirdLife Population Density Spreadsheet; Thiollay 1986), and assuming it inhabits 20% of the forest within its range (3,363 sqkm [Global Forest Watch 2021]), the population is estimated to fall in the band of 740-11,434 individuals. This is roughly equivalent to 493-7,622 mature individuals, rounded here to 490-7,630 mature individuals.

This species has two subspecies, and based on its distribution, it is likely to have multiple subpopulations. It is therefore plausible that the largest subpopulation contains <1,000 mature individuals. 

Trend justification: The species has been extirpated from parts of its range. There are no data on population trends; however, this species is suspected to be declining in line with ongoing habitat loss and degradation. Data from Global Forest Watch (2021) showed that forest cover throughout the species's range declined by 4.6% over the last three generations (~11 years). Based on forest loss data between 2017-2020 (Global Forest Watch 2021), and projected forward over three generations, the species range is likely to decline by <2%. Therefore, declines are suspected to be slow to moderate in rate.

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	Armando Bermudez National Park
Dominican Republic	Parque Nacional Dr Juan Bautista Pérez Rancier (Valle Nuevo)
Dominican Republic	Parque Nacional Montaña La Humeadora
Dominican Republic	Sierra de Bahoruco National Park
Dominican Republic	Sierra de Neyba
Haiti	Aux Cornichons
Haiti	Aux Diablotins

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	1300 - 2100 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Agro-industry farming	Timing		Scope		Severity		Impact
		Ongoing		Unknown		Unknown		Unknown
		Stresses Ecosystem degradation, Ecosystem conversion
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

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Recommended citation
BirdLife International (2024) Species factsheet: La Selle Thrush Turdus swalesi. Downloaded from https://datazone.birdlife.org/species/factsheet/la-selle-thrush-turdus-swalesi on 23/11/2024.
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 23/11/2024.