CR
Lendu Crombec Sylvietta chapini



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.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
D D D1

Red List history
Year Category Criteria
2016 Critically Endangered D
2012 Not Recognised
2008 Not Recognised
2007 Not Recognised
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) 4,400 medium
Number of locations 1 -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 1-49 poor suspected 2016
Population trend Decreasing 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 1 - - -
Largest subpopulations 100 - - -
Generation length (yrs) 5 - - -

Population justification: This species is very rare and has even been suggested to be possibly extinct (Hume and Walters 2012). However, unexplored forest where the species could occur exists within its known range and so the species likely persists (L. Fishpool in litt. 2011). The species is likely to be very rare given the lack of reports and lack of habitat, and so it is placed in the range of 1-49 mature individuals.

Trend justification: The population may have declined as a result of historical habitat loss, though it is not certain to what extent this has continued.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Congo, The Democratic Republic of the N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Congo, The Democratic Republic of the Lendu Plateau

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

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
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%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2017) Species factsheet: Sylvietta chapini. Downloaded from http://www.birdlife.org on 23/10/2017. Recommended citation for factsheets for more than one species: BirdLife International (2017) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/10/2017.