LC
Mbulu Robin-chat Dessonornis mbuluensis



Taxonomy

Taxonomic note
Dessonornis anomalus, D. macclounii and D. mbuluensis (del Hoyo and Collar 2016) were previously lumped as Cossypha anomala following Dowsett and Forbes-Watson (1993) and Sibley and Monroe (1990, 1993).

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
- - -

Red List history
Year Category Criteria
2016 Least Concern
Species attributes

Migratory status not a migrant Forest dependency Medium
Land mass type Average mass 24 g
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 5,300 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 20000-49999 poor not applicable 0
Population trend Stable 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 - - -
Percentage in largest subpopulation 100 - - -
Generation length (yrs) 4.6 - - -

Population justification: While potentially scarce (Collar 2016), population density estimates for congeners (see Collar 2016) and assuming it inhabits only a proportion of its habitat, would still lead to this species having a population size of >>10,000 mature individuals, placed here in the range of 20,000-49,999 mature individuals.

Trend justification: Anthropogenic habitat alteration has occurred within this region (BirdLife International 2016), but it not certain whether this has affected this species's montane habitat. Therefore, the population is tentatively considered stable.


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Tanzania Lake Manyara

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Rural Gardens suitable resident
Forest Subtropical/Tropical Moist Montane major resident
Altitude   Occasional altitudinal limits  

Recommended citation
BirdLife International (2022) Species factsheet: Dessonornis mbuluensis. Downloaded from http://www.birdlife.org on 19/05/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 19/05/2022.