• 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. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
D	D	D1

Red List history

Year	Category	Criteria
2016	Critically Endangered	D
2015	Critically Endangered	D
2012	Critically Endangered	D
2009	Critically Endangered	D1
2008	Critically Endangered
2006	Critically Endangered
2004	Critically Endangered
2000	Critically Endangered
1996	Critically Endangered
1994	Critically Endangered
1988	Threatened

Migratory status	not a migrant	Forest dependency	medium
Land mass type	land-mass type - continent	Average mass	-

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	1	medium
Number of locations		-
Severely Fragmented		-

	Value	Data quality	Derivation	Year of estimate
No. of mature individuals	1-49	poor	estimated	2004
Population trend	unknown		not applicable	-
Decline (3 years/1 generation past)		-	-	-
Decline (5 years/1 generation past)		-	-	-
Decline (10 years/1 generation past)		-	-	-
Decline (10 years/3 generation future)		-	-	-
Decline (10 years/3 generation past and future)		-	-	-
Number of subpopulations		-	-	-
Percentage in largest subpopulation		-	-	-
Generation length (yrs)	7	-	-	-

Population justification: Any remaining population is assumed to be tiny (numbering fewer than 50 individuals and mature individuals) based on a lack of records and failure of surveys to find it.

Country/Territory	Presence	Origin	Resident	Breeding	Non-breeding	Passage
Bangladesh	possibly extinct	native		yes
India	possibly extinct	native		yes
Myanmar	possibly extinct	native		yes
Nepal	extinct	native		yes

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Wetlands (inland)	Permanent Freshwater Lakes (over 8ha)	major	resident
Wetlands (inland)	Permanent Freshwater Marshes/Pools (under 8ha)	major	resident
Altitude		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		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Past, Unlikely to Return		Majority (50-90%)		Slow, Significant Declines		Past Impact
		Stresses Species mortality
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Eichhornia crassipes	Timing		Scope		Severity		Impact
		Ongoing		Unknown		Unknown		Unknown
		Stresses Ecosystem degradation

Purpose	Primary form used	Life stage used	Source	Scale	Level	Timing
Food - human	-	-			non-trivial	recent
Pets/display animals, horticulture	-	-			non-trivial	recent
Sport hunting/specimen collecting	-	-			non-trivial	recent

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Recommended citation
BirdLife International (2023) Species factsheet: Rhodonessa caryophyllacea. Downloaded from http://datazone.birdlife.org/species/factsheet/pink-headed-duck-rhodonessa-caryophyllacea on 28/05/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 28/05/2023.