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

Taxonomic note

Zoothera talaseae and Z. atrigena (del Hoyo and Collar 2016) were previously lumped as Z. talaseae 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
-	-	-

Red List history

Year	Category	Criteria
2019	Least Concern
2016	Least Concern
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	high
Land-mass type		Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	10,600 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	1500-7000 mature individuals	poor	estimated	2019
Population trend	stable	poor	suspected	1996-2008
Generation length	3 years	-	-	-
Number of subpopulations	2-10	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The population was considered to fall within the band of 2,500-9,999 individuals (Buchanan et al. 2008), equating to c. 1,600-7000 mature individuals. While Davis et al. (2017) considered that the population should be placed in a lower band due to a low encounter rate, the size of the range and extent of remaining suitable habitat, coupled with the additional occurrence on Umboi Island suggests that this estimate is too low, hence the current estimate is retained.

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats, with no evidence of logging within the habitat of the species noted and an apparent absence of impact from introduced potential predators inferred from the congeneric Makira Thrush Z. margaretae (Davis et al. 2017).

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Papua New Guinea	extant	native	yes

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	1000 - 2200 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Biological resource use	Logging & wood harvesting - Intentional use: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Future		Minority (<50%)		No decline		No/Negligible Impact: 2
		Stresses Ecosystem degradation, Ecosystem conversion
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Felis catus	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		No decline		Low Impact: 4
		Stresses Reduced reproductive success, Species mortality

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Recommended citation
BirdLife International (2024) Species factsheet: New Britain Thrush Zoothera talaseae. Downloaded from https://datazone.birdlife.org/species/factsheet/new-britain-thrush-zoothera-talaseae 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.