CR
Santa Marta Wren Troglodytes monticola



Taxonomy

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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
A3c+4c; C2a(i,ii) A2c+3c+4c; B1ab(i,ii,iii,iv,v); C2a(i,ii); D A2c+3c+4c; B1ab(i,ii,iii,iv,v); C2a(i,ii); D1

Red List history
Year Category Criteria
2018 Critically Endangered A3c+4c; C2a(i,ii)
2016 Critically Endangered A3c+4c
2015 Critically Endangered A3c+4c
2013 Critically Endangered A3c+4c
2012 Critically Endangered A3c+4c
2011 Critically Endangered A3c; A4c
2008 Vulnerable B1a+b(i,ii,iii,iv,v)
2005 Vulnerable
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency Medium
Land mass type Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1,800 good
Number of locations 1 -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 50-249 poor suspected 2003
Population trend Decreasing poor inferred -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 80-100 - - -
Decline (10 years/3 generation past and future) 80-100 - - -
Number of subpopulations 1 - - -
Largest subpopulations 100 - - -
Generation length (yrs) 3.6 - - -

Population justification: The species's population size has not been formally estimated and, in the absence of sufficient data, it is preliminarily estimated to number 50-249 mature individuals; however detailed research is urgently required. This estimate equates to 75-379 individuals in total, rounded here to 70-400 individuals.

Trend justification: The species's population is suspected to have undergone a very rapid decline of more than 70% over the last 10 years (Fundación ProAves de Colombia 2011) owing to extensive and severe habitat loss and degradation caused by deforestation, extensive burning and overgrazing. Given the severity of threats, this decline is expected to further accelerate in the future (Fundación ProAves de Colombia 2011).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Colombia N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Colombia Valle del Río Frío
Colombia Sierra Nevada de Santa Marta National Natural Park and surrounding areas

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Montane major resident
Grassland Subtropical/Tropical High Altitude suitable resident
Shrubland Subtropical/Tropical High Altitude suitable resident
Altitude 3200 - 4600 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Livestock farming & ranching - Small-holder grazing, ranching or farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation
Natural system modifications Fire & fire suppression - Increase in fire frequency/intensity Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation

Recommended citation
BirdLife International (2020) Species factsheet: Troglodytes monticola. Downloaded from http://www.birdlife.org on 16/07/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/07/2020.