LC
Bicolored Antbird Gymnopithys bicolor



Taxonomy

Taxonomic note
Gymnopithys leucaspis and G. bicolor (del Hoyo and Collar 2016) were previously listed as G. leucaspis following AOU (1998 & supplements), SACC (2005 & updates) and Stotz et al. (1996).

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.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.

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 Not Recognised
2008 Not Recognised
2004 Not Recognised
2000 Not Recognised
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency high
Land mass type Average mass 24 g
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1,630,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 0
Population trend decreasing 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) 4.9 - - -

Population justification: The global population size has not been quantified, but this species is described as fairly common (Stotz et al. 1996).

Trend justification: This population is suspected to be in decline owing to ongoing habitat destruction (del Hoyo et al. 2003).


Country/territory distribution
Country/Territory Presence Origin Resident Breeding Non-breeding Passage
Colombia extant native yes
Costa Rica extant native yes
Ecuador extant native yes
Honduras extant native yes
Nicaragua extant native yes
Panama extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane suitable resident
Altitude 0 - 900 m Occasional altitudinal limits (max) 1700 m

Recommended citation
BirdLife International (2023) Species factsheet: Gymnopithys bicolor. Downloaded from http://datazone.birdlife.org/species/factsheet/bicolored-antbird-gymnopithys-bicolor on 06/06/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 06/06/2023.