LC
White-crested Tyrannulet Serpophaga subcristata



Taxonomy

Taxonomic note
Serpophaga subcristata and S. munda (SACC [2005 & updates]; Sibley & Monroe [1990, 1993]; Stotz et al. [1996]) have been lumped and split into S. subcristata and S. griseicapilla following del Hoyo and Collar 2016.

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.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
Species attributes

Migratory status full migrant Forest dependency Low
Land mass type Average mass 7 g
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 7,870,000 medium
Extent of Occurrence non-breeding (km2) 7,980,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable not applicable 0
Population trend Stable suspected -
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) 3.6 - - -

Population justification: The global population size has not been quantified, but this species was described as 'fairly common', prior to being split (Stotz et al. (1996).

Trend justification: This species tolerates converted habitats (del Hoyo et al. 2004) and its population is therefore suspected to be stable.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Argentina N Extant
Bolivia N Extant Yes
Brazil N Extant Yes Yes
Paraguay N Extant
Uruguay N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Brazil São Francisco Xavier / Monte Verde

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land suitable breeding
Artificial/Terrestrial Arable Land suitable non-breeding
Artificial/Terrestrial Pastureland suitable non-breeding
Artificial/Terrestrial Pastureland suitable breeding
Artificial/Terrestrial Plantations suitable breeding
Artificial/Terrestrial Plantations suitable non-breeding
Artificial/Terrestrial Rural Gardens suitable breeding
Artificial/Terrestrial Rural Gardens suitable non-breeding
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable breeding
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable non-breeding
Forest Subtropical/Tropical Dry suitable non-breeding
Forest Subtropical/Tropical Dry suitable breeding
Forest Subtropical/Tropical Moist Lowland major non-breeding
Forest Subtropical/Tropical Moist Lowland major breeding
Savanna Dry suitable non-breeding
Savanna Dry suitable breeding
Shrubland Subtropical/Tropical Dry suitable breeding
Shrubland Subtropical/Tropical Dry suitable non-breeding
Altitude 0 - 2000 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2021) Species factsheet: Serpophaga subcristata. Downloaded from http://www.birdlife.org on 04/12/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 04/12/2021.