• 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
-	-	C2a(i)

Red List history

Year	Category	Criteria
2018	Vulnerable	C2a(i)
2016	Vulnerable	B1ab(ii,iii,v); C2a(i)
2012	Vulnerable	B1ab(ii,iii,v);C2a(i)
2008	Vulnerable	B1a+b(ii,iii,v); C2a(i)
2004	Vulnerable
2000	Vulnerable
1996	Vulnerable
1994	Vulnerable
1988	Threatened

Migratory status	not a migrant	Forest dependency	medium
Land-mass type	shelf island	Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	29,100 km2	medium
Number of locations	6-10	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	2500-9999 mature individuals	poor	estimated	2000
Population trend	decreasing	poor	suspected	1998-2008
Generation length	5.8 years	-	-	-
Number of subpopulations	2-100	-	-	-

Population justification: The population is poorly-known but 11 individuals were counted (along with 70 Sooty Melidectes Melidectes fuscus) on 12 censuses in the Kaijende Highlands (Beehler and Sine 2007). The population is precautionarily estimated to number 2,500-9,999 mature individuals, with possibly no more than 1000 in any subpopulation, based on the small number of individuals recorded across its restricted geographical range.

Trend justification: There are no data on population trends and its high-altitude locations are largely safe from direct impacts. However, the species is thought to be slowly declining because of habitat degradation at some of its more accessible locations close to centres of human population such as Mt Hagen.

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
Grassland	Subtropical/Tropical High Altitude	major	resident
Shrubland	Subtropical/Tropical High Altitude	suitable	resident
Altitude	3000 - 3800 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Shifting agriculture	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Unknown		Unknown
		Stresses Indirect ecosystem effects, Ecosystem degradation
Natural system modifications	Fire & fire suppression - Increase in fire frequency/intensity	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Long-bearded Honeyeater Melionyx princeps. Downloaded from https://datazone.birdlife.org/species/factsheet/long-bearded-honeyeater-melionyx-princeps on 23/12/2024.
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 23/12/2024.