Mbulu White-eye (Zosterops mbuluensis) - BirdLife species factsheet

Mbulu White-eye Zosterops mbuluensis

Current view: Data table and detailed info

Taxonomy

Taxonomic note
Zosterops poliogastrus, Z. kaffensis, Z. kulalensis, Z. kikuyuensis, Z. silvanus, Z. eurycricotus, Z. mbuluensis and Z. winifredae (del Hoyo and Collar 2016) were previously lumped as Z. poliogastrus 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
2016	Least Concern

Species attributes

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

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	50,500 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	unknown	-	-	-
Generation length	3.5 years	-	-	-

Population justification: The global population size has not been quantified, but it is believed to be large as the species is described as locally common to abundant in much of its range (Fry and Keith 2004).

Trend justification: The population trend is difficult to determine because of uncertainty over the impacts of habitat modification on population sizes.

Country/territory distribution

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Kenya	extant	native		yes
Tanzania	extant	native		yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name
Tanzania	Lake Manyara
Tanzania	Ngorongoro Conservation Area

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Plantations	marginal	resident
Artificial/Terrestrial	Rural Gardens	suitable	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Shrubland	Subtropical/Tropical High Altitude	suitable	resident
Altitude	1380 - 3400 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2023) Species factsheet: Zosterops mbuluensis. Downloaded from http://datazone.birdlife.org/species/factsheet/mbulu-white-eye-zosterops-mbuluensis on 06/12/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 06/12/2023.