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

Taxonomic note

Symposiachrus barbatus and S. malaitae (del Hoyo and Collar 2016) were previously lumped as Monarcha barbatus (see Sibley and Monroe [1990, 1993]; Coates et al. [2006]; Filardi and Smith [2005]).

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
2022	Near Threatened	B1b(iii,v)
2016	Near Threatened	A2c+3c+4c
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	medium
Land-mass type		Average mass	21 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	6,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	poor	inferred	2015-2025
Rate of change over the past 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Generation length	3.36 years	-	-	-

Population justification: The population size has not been estimated but this species is described as uncommon throughout its range (Dutson 2011, Callaghan et al. 2019).

Trend justification:

The population is inferred to be declining owing to forest loss and degradation. Malaita has experienced moderate levels of logging and a slow rate of deforestation (Katovai et al. 2015), and remote sensing data (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein) indicate that in the ten years to 2020, forest loss in this species' range has been equivalent to 3-5%. This may accelerate slightly (to an equivalent rate of 4-6%) in the future based on losses 2015-2020. The species is described as rare in heavily degraded forest (Dutson 2011) such that the population is inferred to be declining and these losses are not expected to slow or cease, with extensive areas of Malaita under logging concessions (Katovai et al. 2015).

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Solomon Islands	extant	native	yes

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Altitude	0 - 1200 m	Occasional altitudinal limits	(max) 1350 m

Threat (level 1)	Threat (level 2)	Impact and Stresses
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation
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

---

Recommended citation
BirdLife International (2024) Species factsheet: Malaita Monarch Symposiachrus malaitae. Downloaded from https://datazone.birdlife.org/species/factsheet/malaita-monarch-symposiachrus-malaitae 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.