NT
Yellow-headed Brush-finch Atlapetes flaviceps



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
- - -

Red List history
Year Category Criteria
2020 Near Threatened C1
2016 Endangered B1ab(i,ii,iii,v);C2a(ii)
2012 Endangered B1ab(i,ii,iii,v);C2a(ii)
2008 Endangered B1a+b(i,ii,iii,v); C2a(ii)
2004 Endangered
2000 Endangered
1996 Endangered
1994 Endangered
1988 Threatened
Species attributes

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

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 67,100 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 10000-19999 medium estimated 2020
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) 1-9 - - -
Decline (10 years/3 generation past and future) 1-9 - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -

Population justification: Previously, the population was estimated to number 250-999 mature individuals. Whilst this is now considered a significant underestimate, the scale of occupancy is recently known to vary with elevation (Escudero-Páez et al. 2018). Higher population densities have as a result been estimated at 80.3 individuals/km2. Assuming that the species occurs in only parts of its mapped range, the population size could therefore number over 300,000 individuals. However, it is likely that this may be overestimated. Earlier estimates produced by intensive methods over two sites (Bibby et al. 2000; ProAves 2004 per Fundación ProAves in litt. 2020), also recorded between 5.1-5.5 individuals/km2 and 5.7-10.0 individuals/km2. Using an average of 6.5 individuals/km2 therefore suggests that the population numbers 25,000 individuals, roughly equating to 17,000 mature individuals. Given the uncertainty in methodology used in observations however, using a more conservative approach, the population may be placed in the band of 10,000-19,999 mature individuals.

Trend justification: Forest loss over a 10-year period was estimated at c. 11.2% (Renjifo et al. 2014). Given that the species readily occupies secondary vegetation and degraded habitats, the rate of population decline may not significantly exceed the rate of forest loss. However, as it may depend on some level of primary forests, the species is thought to be undergoing a slower, suspected decline approaching 10% over its 3-generation period.


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 Cañón del Río Combeima
Colombia Cuenca del Río San Miguel
Colombia Cuenca del Río Toche
Colombia Parque Nacional Natural Nevado del Huila
Colombia Puracé Natural National Park
Colombia Reserva Natural Meremberg
Colombia Reservas Comunitarias de Roncesvalles
Colombia Reserva Natural Ibanasca
Colombia Selva de Florencia

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Moist Montane major resident
Shrubland Subtropical/Tropical High Altitude suitable resident
Altitude 1550 - 2700 m Occasional altitudinal limits (min) 1200 m

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 Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching - Agro-industry grazing, ranching or farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2022) Species factsheet: Atlapetes flaviceps. Downloaded from http://www.birdlife.org on 02/12/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 02/12/2022.