LC
Southern Beardless Tyrannulet Camptostoma obsoletum



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: https://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
2021 Least Concern
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency low
Land-mass type Average mass 8 g
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 17,900,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size 50000000 mature individuals poor estimated 2016
Population trend stable - suspected -
Generation length 2.22 years - - -

Population justification: The global population is estimated to number more than 50 million mature individuals (Partners in Flight 2019). The species is described as 'fairly common' (Stotz et al. 1996).

Trend justification: The population is thought to be stable (Partners in Flight 2019).


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Argentina extant native yes
Bolivia extant native yes
Brazil extant native yes
Colombia extant native yes
Costa Rica extant native yes
Ecuador extant native yes
French Guiana extant native yes
Guyana extant native yes
Panama extant native yes
Paraguay extant native yes
Peru extant native yes
Suriname extant native yes
Trinidad and Tobago extant native yes
Uruguay extant native yes
Venezuela 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 Rural Gardens suitable non-breeding
Artificial/Terrestrial Rural Gardens suitable breeding
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable non-breeding
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable breeding
Artificial/Terrestrial Urban Areas suitable non-breeding
Artificial/Terrestrial Urban Areas suitable breeding
Desert Hot suitable non-breeding
Desert Hot suitable breeding
Forest Subtropical/Tropical Dry suitable non-breeding
Forest Subtropical/Tropical Dry suitable breeding
Forest Subtropical/Tropical Moist Lowland suitable non-breeding
Forest Subtropical/Tropical Moist Lowland suitable breeding
Forest Subtropical/Tropical Swamp suitable non-breeding
Forest Subtropical/Tropical Swamp suitable breeding
Shrubland Subtropical/Tropical Dry suitable non-breeding
Shrubland Subtropical/Tropical Dry suitable breeding
Shrubland Subtropical/Tropical Moist suitable non-breeding
Shrubland Subtropical/Tropical Moist suitable breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) suitable non-breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) suitable breeding
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable non-breeding
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable breeding
Altitude 0 - 2800 m Occasional altitudinal limits (max) 3120 m

Recommended citation
BirdLife International (2024) Species factsheet: Southern Beardless Tyrannulet Camptostoma obsoletum. Downloaded from https://datazone.birdlife.org/species/factsheet/southern-beardless-tyrannulet-camptostoma-obsoletum on 18/12/2024.
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 18/12/2024.