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

Taxonomic note

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. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.html#.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2016	Near Threatened	D1+2
2012	Near Threatened	D1+2
2008	Near Threatened	D1; D2
2004	Near Threatened
2000	Lower Risk/Near Threatened
1996	Vulnerable
1994	Vulnerable
1988	Lower Risk/Least Concern

Migratory status	not a migrant	Forest dependency	medium
Land mass type		Average mass	16 g

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	22	medium
Number of locations		-
Severely Fragmented		-

	Value	Data quality	Derivation	Year of estimate
No. of mature individuals	670	poor	estimated	2003
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	100	-	-	-
Generation length (yrs)	4.2	-	-	-

Population justification: The population is estimated to number at least 1,000 individuals, roughly equivalent to 670 mature individuals (T. Mark in litt. 2003).

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

Country/Territory	IBA Name
Brazil	Arquipélago de Fernando de Noronha

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Rural Gardens	suitable	resident
Forest	Subtropical/Tropical Dry	major	resident
Shrubland	Subtropical/Tropical Dry	suitable	resident
Altitude	0 - 60 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Past, Unlikely to Return		Minority (<50%)		Negligible declines		Past Impact
		Stresses Ecosystem degradation, Ecosystem conversion
Natural system modifications	Fire & fire suppression - Trend Unknown/Unrecorded	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Unknown		Unknown
		Stresses Ecosystem degradation

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Recommended citation
BirdLife International (2023) Species factsheet: Vireo gracilirostris. Downloaded from http://datazone.birdlife.org/species/factsheet/noronha-vireo-vireo-gracilirostris on 30/05/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 30/05/2023.