Gorgeted Puffleg Eriocnemis isabellae


Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: #

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
B1ab(ii,iii,v)+2ab(ii,iii,v) B1ab(ii,iii,v)+2ab(ii,iii,v) B1ab(ii,iii,v)+2ab(ii,iii,v); D1

Red List history
Year Category Criteria
2018 Critically Endangered B1ab(ii,iii,v)+2ab(ii,iii,v)
2016 Critically Endangered B1ab(iii)+2ab(iii)
2015 Critically Endangered B1ab(iii)+2ab(iii)
2012 Critically Endangered B1ab(iii)+2ab(iii)
2010 Critically Endangered B1a+b(iii); B2a+b(iii)
2009 Critically Endangered B1a+b(iii); B2a+b(iii)
2008 Not Recognised
2004 Not Recognised
2000 Not Recognised
1994 Not Recognised
1988 Not Recognised
Species attributes

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

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 44 medium
Extent of Occurrence breeding/resident (km2) 9 good
Number of locations 1 -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 250-999 poor inferred 2014
Population trend Decreasing poor 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 100 - - -
Generation length (yrs) 4.2 - - -

Population justification: The species has been described as fairly common (Gallo-Cajiao and López-O. 2014), but given that the area of suitable habitat is thought to be less than 10 km2, the total population size is presumably very small. Based on known densities of the congeneric E. derbyi (20−90 birds per km2 [Cresswell et al. 1999]), it has been estimated at up to 900 individuals (Gallo-Cajiao and López-O. 2014, Fjeldså and Sharpe 2015), which roughly equates to 600 mature individuals, placed here in the band 250-999 mature individuals.

Trend justification: The population is suspected to be decreasing owing to habitat loss and degradation, however the rate of decline has not been quantified.

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 Serranía del Pinche

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Montane major resident
Altitude 2600 - 2900 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Agro-industry farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Ecosystem degradation, Ecosystem conversion
Transportation & service corridors Roads & railroads Timing Scope Severity Impact
Future Majority (50-90%) Rapid Declines Low Impact: 5
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2023) Species factsheet: Eriocnemis isabellae. Downloaded from on 31/03/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from on 31/03/2023.