LC
White-crowned Tapaculo Scytalopus atratus



Taxonomy

Taxonomic note
For many years considered conspecific with broadly sympatric S. femoralis. Systematics, and ranges of subspecies listed, still unresolved: song in E Colombia and Ecuador (usually 1 second long, of 8–10 sharp upstroke notes at 2.5–2.6 kHz, even pace of 8–11 per second, song repeated at intervals of 1–3 seconds) very different from songs in SW Venezuela (c. 30 seconds, of sharp downstrokes at 2.8 kHz, 3–7 per second) and in Peru S & E of R Marañón (sharp 2.4–3 kHz downstroke, 4–7 per second, varying between single notes and short series of 2–7 at irregular intervals, or as continuous series for up to 30 seconds or more), suggesting that birds in E Andes of Colombia and Ecuador probably represent a separate species from populations to N, W and S; further study required. Three subspecies presently recognized.

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 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Not Recognised
1988 Not Recognised
Species attributes

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

Estimate Data quality
Extent of Occurrence (breeding/resident) 1,120,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend decreasing - suspected -
Generation length 3.29 years - - -

Population justification: The global population size has not been quantified, but this species is described as 'fairly common' (Stotz et al. 1996). This species is considered to have a high dependency on forest habitat, and tree cover is estimated to have declined by 3.1% within its mapped range over the past 10 years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). It is therefore tentatively suspected that this rate of cover loss may have led to a decline of between 1-19% in the species' population size over the same time frame, with a best estimate of reduction being less than 5%.

Trend justification:   .


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Colombia extant native yes
Ecuador extant native yes
Peru 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
Forest Subtropical/Tropical Moist Lowland suitable resident
Forest Subtropical/Tropical Moist Montane major resident
Altitude 800 - 3100 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2024) Species factsheet: White-crowned Tapaculo Scytalopus atratus. Downloaded from https://datazone.birdlife.org/species/factsheet/white-crowned-tapaculo-scytalopus-atratus 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.