LC
Cuzco Warbler Myiothlypis chrysogaster



Taxonomy

Taxonomic note

Myiothlypis chrysogaster and M. chlorophrys (del Hoyo and Collar 2016) were previously placed in the genus Basileuterus and lumped as B. chrysogaster following  SACC (2005 & updates); Sibley & Monroe (1990, 1993); 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.

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

Red List history
Year Category Criteria
2024 Least Concern
2016 Least Concern
2012 Not Recognised
2008 Not Recognised
2004 Not Recognised
2000 Not Recognised
1994 Not Recognised
1988 Not Recognised
Species attributes

Migratory status not a migrant Forest dependency medium
Land-mass type Average mass 11 g
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 246,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend decreasing - - -
Generation length 2.58 years - - -

Population justification: The global population size has not been quantified. This species is considered to have a medium dependency on forest habitat, and tree cover is estimated to have declined by 3.7% within its mapped range over the past 10 years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). Therefore, as a precautionary measure, it is tentatively suspected that this loss of cover may have led to a decline of between 1-19% in the species' population size over the same time frame.

Trend justification:   .


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Bolivia extant native yes
Peru 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 150 - 2370 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2024) Species factsheet: Cuzco Warbler Myiothlypis chrysogaster. Downloaded from https://datazone.birdlife.org/species/factsheet/cuzco-warbler-myiothlypis-chrysogaster on 06/12/2024.
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 06/12/2024.