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

Taxonomic note
Gymnomyza viridis and G. brunneirostris (del Hoyo and Collar 2016) were previously lumped as G. viridis following Sibley and 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
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)	11,800 km2	medium
Number of locations	11-100	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	50000-99999 mature individuals	medium	estimated	2005
Population trend	decreasing	poor	suspected	1991-2006
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	5.8 years	-	-	-

Population justification: Line transects were surveyed for the species in lowland forest and mahogany plantations at Colo-I-Suva (Viti Levu) in 2003. If the species occurs at similar densities elsewhere on Viti Levu, extrapolation would give a total population of 130,000 calling birds for the whole island (D. Jackson in litt. 2005). Two other surveys, based on triangulated point-counts and estimates of territory size respectively, gave extrapolated figures of 25,000 pairs and 50,000 pairs for Viti Levu (White in litt. 2005).

Trend justification: A slow to moderate and on-going population decline is suspected, based on continuing habitat loss, although the species shows a degree of tolerance of degraded forest.

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

Country/Territory	IBA Name
Fiji	Greater Tomaniivi
Fiji	Koroyanitu / Vaturu
Fiji	Rairaimatuku Highlands
Fiji	Sovi Basin
Fiji	Viti Levu Southern Highlands

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

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Wood & pulp plantations - Scale Unknown/Unrecorded	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
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Unknown		Unknown
		Stresses Indirect ecosystem effects, Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Giant Honeyeater Gymnomyza brunneirostris. Downloaded from https://datazone.birdlife.org/species/factsheet/giant-honeyeater-gymnomyza-brunneirostris on 26/12/2024.
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 26/12/2024.