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Black-breasted Puffleg Eriocnemis nigrivestis
BirdLife is updating this factsheet for the 2016 Red List
Please email us with any relevant information

IUCN Red List Criteria

Critically Endangered B1ab(i,ii,iii,v) 
Endangered B1ab(i,ii,iii,v)+2ab(i,ii,iii,v);D 
Vulnerable B1ab(i,ii,iii,v)+2ab(i,ii,iii,v);D1+2 

IUCN Red List history

Year Category
2015 Critically Endangered
2013 Critically Endangered
2012 Critically Endangered
2010 Critically Endangered
2009 Critically Endangered
2008 Critically Endangered
2004 Critically Endangered
2000 Critically Endangered
1996 Critically Endangered
1994 Critically Endangered
1988 Threatened

Species attributes

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


  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 70 medium
Area of Occupancy breeding/resident (km2) 70 good
Number of locations 2-5 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 140-180 good Estimated 2007
Population trend Decreasing poor Suspected -
Number of subpopulations 2-100 - - -
Largest subpopulation 1-89 - - -
Generation length (yrs) 4.2 - - -
Population justification: The population is estimated to number 210-268 individuals, roughly equating to 140-180 mature individuals.
Trend justification: This species is suspected to have suffered ongoing declines at a rate of 10-19% over ten years, owing to widespread and continuing habitat loss within its range. On the northwest flanks of Volcán Pichincha, deforestation rates for high-Andean montane forest accelerated in recent years (Santander et al. 2004). In the period 1996-2006, an estimated 7.5% of the forest cover was lost, extrapolated from the period 1996-2001 (Santander et al. 2004, O. Jahn in litt. 2007). In Esmeraldas, 4% of the remnant high-Andean montane forest were cut in the last decade (Cárdenas 2007). Deforestation was probably much more severe on the slopes above the Intag valley, which are outside the Cotacachi-Cayapas Ecological Reserve and geopolitically belong to Imbabura (O. Jahn in litt. 2007). In the future climate change may play a role in further stressing the species and rendering remaining habitat unsuitable (Jahn and Santander 2008).

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Ecuador Native Extant Yes      

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Ecuador Mindo and western foothills of Volcan Pichincha (Mindo y Estribaciones Occidentales del volcán Pichincha IBA) site factsheet
Ecuador Reserva Ecológica Cotacachi-Cayapas site factsheet
Ecuador Volcán Atacazo site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Montane Major resident
Altitude 1700 - 4500 m Occasional altitudinal limits (max) 3500 m

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Scale Unknown/Unrecorded Timing Scope Severity Impact
Ongoing Minority (<50%) Rapid Declines Medium Impact: 6
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching / Scale Unknown/Unrecorded Timing Scope Severity Impact
Past, Unlikely to Return Majority (50-90%) Rapid Declines Past Impact
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting / Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Whole (>90%) Rapid Declines High Impact: 8
Ecosystem degradation
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Ongoing Whole (>90%) Slow, Significant Declines Medium Impact: 7
Competition, Species mortality
Energy production & mining Mining & quarrying Timing Scope Severity Impact
Future Majority (50-90%) Rapid Declines Low Impact: 5
Ecosystem degradation, Ecosystem conversion
Geological events Volcanoes Timing Scope Severity Impact
Past, Likely to Return Whole (>90%) Very Rapid Declines Past Impact
Ecosystem degradation, Ecosystem conversion, Species mortality
Residential & commercial development Commercial & industrial areas Timing Scope Severity Impact
Past, Unlikely to Return Minority (<50%) Rapid Declines Past Impact
Ecosystem degradation, Ecosystem conversion


Purpose Primary form used Life stage used Source Scale Level Timing
Pets Whole Adults and juveniles Wild International Trivial Recent
Pets/display animals, horticulture - - - International

Recommended citation
BirdLife International (2016) Species factsheet: Eriocnemis nigrivestis. Downloaded from on 21/10/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from on 21/10/2016.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Critically Endangered
Family Trochilidae (Hummingbirds)
Species name author (Bourcier & Mulsant, 1852)
Population size 140-180 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 70 km2
Country endemic? Yes
Links to further information
- Summary information on this species