EN
Moheli Brush-warbler Nesillas mariae



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
- B1ab(ii,iii,v)+2ab(ii,iii,v) B1ab(ii,iii,v)+2ab(ii,iii,v); D2

Red List history
Year Category Criteria
2021 Endangered B1ab(ii,iii,v)+2ab(ii,iii,v)
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Near Threatened
1988 Near Threatened
Species attributes

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

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 250
Extent of Occurrence breeding/resident (km2) 316
Number of locations 2-5 -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable not applicable 0
Population trend Decreasing 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) 1-10 - - -
Decline (10 years/3 generation past and future) 1-10 - - -
Number of subpopulations 1 - - -
Percentage in largest subpopulation 100 - - -

Population justification: The global population size has not been quantified, but the species is described as common (del Hoyo et al. 2006).

Trend justification: This species has a high forest dependency, and it is therefore inferred to be declining in line with ongoing forest loss on Moheli (Global Forest Watch 2021), likely for subsistence farmland and fuel wood (Sewall et al. 2003). Between 2001-2019, this species experienced forest cover loss of 6.6% (Global Forest Watch 2021). This would equate to 3.5% over 10 years. Between 2016-2019, this species experienced forest cover loss of 2.3% across its range (Global Forest Watch 2021). Projected forward 10 years from 2016, this would equate to a decline of 5.6%. The rate of decline is therefore suspected to fall in the band 1-10%.


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Comoros Mont Mlédjélé (Mwali highlands)

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Altitude 500 - 0 m 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%) Slow, Significant Declines Medium Impact: 6
Stresses
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
Species disturbance, Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2022) Species factsheet: Nesillas mariae. Downloaded from http://www.birdlife.org on 24/09/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 24/09/2022.