• 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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
B1ab(i,ii,iii,v); C2a(i,ii); D	B1ab(i,ii,iii,v); C2a(i,ii); D	B1ab(i,ii,iii,v); C2a(i,ii); D1+2

Red List history

Year	Category	Criteria
2016	Critically Endangered	B1ab(i,ii,iii,v); C2a(i,ii); D
2015	Critically Endangered	B1ab(i,ii,iii,v);C2a(i,ii);D
2013	Critically Endangered	B1ab(i,ii,iii,v);C2a(i,ii);D
2012	Critically Endangered	B1ab(i,ii,iii,v);C2a(i,ii);D
2010	Critically Endangered	B1a+b(i,ii,iii,v); C2a(ii); D1
2009	Critically Endangered	B1a+b(i,ii,iii,v); C2a(ii); D1
2008	Critically Endangered
2004	Critically Endangered
2000	Critically Endangered
1996	Critically Endangered
1994	Critically Endangered
1988	Threatened

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	3 km2	medium
Number of locations	1	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	1-49 mature individuals	medium	estimated	2000
Population trend	decreasing	poor	suspected	2000-2010
Generation length	4.6 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The single known remaining population, rediscovered in 1996 after more than 100 years, is assumed to be tiny (fewer than 50 individuals and mature individuals).

Trend justification: The species is suspected to be declining at an unknown rate, owing to ongoing forest loss within its historic range. The degree to which it can tolerate secondary growth and its ecological requirements are poorly known.

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

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Altitude	0 - 900 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Scale Unknown/Unrecorded	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Gathering terrestrial plants - Unintentional effects (species is not the target)	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		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, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Kinglet Calyptura Calyptura cristata. Downloaded from https://datazone.birdlife.org/species/factsheet/kinglet-calyptura-calyptura-cristata on 22/11/2024.
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 22/11/2024.