Guianan Tyrannulet (Zimmerius acer) - BirdLife species factsheet

Guianan Tyrannulet Zimmerius acer

Current view: Data table and detailed info

Taxonomy

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: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

IUCN Red List criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2016	Least Concern
2012	Least Concern
2009	Least Concern
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Species attributes

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

Distribution

	Estimate	Data quality
Extent of Occurrence breeding/resident (km²)	3,980,000
Severely fragmented?	no	-

Population and trend

	Value	Data quality	Derivation	Year of estimate
Number of mature individuals	unknown	not applicable	not applicable	0
Population trend	increasing		observed	-
Generation length (years)	3.6	-	-	-

Population justification: The global population size has not been quantified, but the species is described as uncommon to common (del Hoyo et al. 2004).

Trend justification: This population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Country/territory distribution

Country/Territory	Presence	Origin	Resident
Brazil	extant	native	yes
French Guiana	extant	native	yes
Guyana	extant	native	yes
Suriname	extant	native	yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Subtropical/Tropical Heavily Degraded Former Forest	suitable	resident
Forest	Subtropical/Tropical Moist Lowland	major	resident
Altitude	0 - 500 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2023) Species factsheet: Zimmerius acer. Downloaded from http://datazone.birdlife.org/species/factsheet/guianan-tyrannulet-zimmerius-acer on 04/10/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 04/10/2023.