LC
Eastern Crested-flycatcher Trochocercus bivittatus



Taxonomy

Taxonomic note

Trochocercus cyanomelas and T. bivittatus (del Hoyo and Collar 2016) were previously lumped as T. cyanomelas following Dowsett & Forbes-Watson (1993) and Sibley & 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
2024 Least Concern
2016 Least Concern
2012 Not Recognised
2008 Not Recognised
2004 Not Recognised
2000 Not Recognised
1994 Not Recognised
1988 Not Recognised
Species attributes

Migratory status not a migrant Forest dependency medium
Land-mass type Average mass 10 g
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 4,200,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend decreasing - estimated -
Generation length 2.71 years - - -

Population justification: The global population size has not been quantified, but the species is reported to be uncommon to frequent (Urban et al. 1997). This species is considered to have a medium dependency on forest habitat, and tree cover is estimated to have declined by 10.4% within its mapped range over the past 10 years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). Therefore, as a precautionary measure, it is tentatively suspected that this loss of cover may have led to a decline of between 1-19% in the species' population size over the same time frame.

Trend justification:   .


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Burundi extant native yes
Congo, The Democratic Republic of the extant native yes
Eswatini extant native yes
Kenya extant native yes
Malawi extant native yes
Mozambique extant native yes
Rwanda extant native yes
Somalia extant native yes
South Africa extant native yes
Tanzania extant native yes
Uganda extant native yes
Zambia extant native yes
Zimbabwe extant native yes

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

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Dry suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane major resident
Shrubland Subtropical/Tropical Dry suitable resident
Altitude 0 - 2300 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2024) Species factsheet: Eastern Crested-flycatcher Trochocercus bivittatus. Downloaded from https://datazone.birdlife.org/species/factsheet/eastern-crested-flycatcher-trochocercus-bivittatus on 06/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 06/12/2024.