Sclater's Nightingale-thrush Catharus maculatus


Taxonomic note
Catharus dryas has been split into Gould's Nightingale-thrush C. dryas and Sclater's Nightingale-thrush C. maculatus following Halley et al. (2017), whose conclusions are fully backed when the Tobias yardstick approach (Tobias et al. 2010) is applied to their data. C. maculatus emerges as a species with; effect size for wing-length ‒3.49 (score 2); effect size for bill shape 1.1 (score 1); streaked throat (1); absence of subtle yellow-olive wash to upper- and underparts in life (?1); effect size for number of notes in song ‒5.26 (3); effect size for song duration 8.12 (3).

Taxonomic source(s)
Halley, M. R., Klicka, J. C., Clee, P. R. S., & Weckstein, J. D. 2017. Restoring the species status of Catharus maculatus (Aves: Turdidae), a secretive Andean thrush, with a critique of the yardstick approach to species delimitation. Zootaxa 4276 (3): 387-404.
Handbook of the Birds of the World and BirdLife International. 2019. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 4. Available at:

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

Red List history
Year Category Criteria
2019 Least Concern
Species attributes

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

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 3,460,000
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) 4.2 - - -

Population justification: The global population size has not been quantified, but the species is described as globally common to uncommon throughout its range (Neotropical Birds Online 2019).

Trend justification: The population is said to be stable in the absence of evidence for any declines or substantial threats (Neotropical Birds Online 2019).

Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Argentina N Extant Yes
Bolivia N Extant Yes
Colombia N Extant Yes
Ecuador N Extant Yes
Peru N Extant Yes
Venezuela N Extant 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
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable resident
Altitude 600 - 2300 m Occasional altitudinal limits (min) 400 m

Recommended citation
BirdLife International (2021) Species factsheet: Catharus maculatus. Downloaded from on 15/10/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from on 15/10/2021.