Tana River Cisticola Cisticola restrictus


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
2021 Data Deficient
2016 Data Deficient
2012 Data Deficient
2008 Data Deficient
2004 Data Deficient
2000 Data Deficient
1996 Data Deficient
1994 Data Deficient
1988 Threatened
Species attributes

Migratory status not a migrant Forest dependency does not normally occur in forest
Land-mass type Average mass 13 g

Estimate Data quality
Extent of Occurrence (breeding/resident) 5,300 km2 medium
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend unknown unknown - -
Generation length 2.7 years - - -

Population justification: The global population size has not been quantified, but the species is described as data deficient and potentially already extinct (del Hoyo et al. 2006): alternatively the type specimens may represent aberrant individuals of another species or potentially hybrid taxa.

Trend justification: The population trend is unknown as this species has not been located in its known range since 1972 (del Hoyo et al. 2006).

Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Kenya extant native yes
Somalia presence uncertain uncertain

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Kenya Lower Tana River Forests

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Shrubland Subtropical/Tropical Dry major resident
Altitude 0 - 500 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2024) Species factsheet: Cisticola restrictus. Downloaded from https://datazone.birdlife.org/species/factsheet/tana-river-cisticola-cisticola-restrictus on 04/03/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org on 04/03/2024.