LC
Stierling's Wren-warbler Calamonastes stierlingi



Taxonomy

Taxonomic note
Calamonastes undosus and C. stierlingi (del Hoyo and Collar 2016) were previously lumped as Camaroptera undosa following Dowsett & Forbes-Watson (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.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
2012 Not Recognised
2008 Not Recognised
2004 Not Recognised
2000 Not Recognised
1994 Not Recognised
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency Does not normally occur in forest
Land mass type Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 2,220,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable 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 - - -
Largest subpopulations - - -
Generation length (yrs) 4.3 - - -

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

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Angola N Extant Yes
Botswana N Extant Yes
Eswatini N Extant Yes
Malawi N Extant Yes
Mozambique N Extant Yes
Namibia N Extant Yes
South Africa N Extant Yes
Tanzania N Extant Yes
Zambia N Extant Yes
Zimbabwe N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Botswana Chobe National Park
Botswana Linyanti swamp/Chobe river
Botswana Makgadikgadi Pans
Malawi Nyika National Park (Malawi)
Malawi Vwaza Marsh Wildlife Reserve
Malawi Lake-shore Forest Reserves
Malawi South Viphya Forest Reserve
Malawi Mtangatanga and Perekezi Forest Reserves
Malawi Kasungu National Park
Malawi Nkhotakota Wildlife Reserve
Malawi Ntchisi Mountain Forest Reserve
Malawi Dzalanyama Forest Reserve
Malawi Namizimu Forest Reserve
Malawi Liwonde Hills Forest Reserve
Malawi Lengwe National Park
Mozambique Chimanimani Mountains (Mozambique)
Mozambique Zambezi River Delta
Mozambique Furancungo woodlands
Namibia Eastern Caprivi wetlands
Tanzania Selous Game Reserve
South Africa Kruger National Park and adjacent areas
South Africa Ndumo Game Reserve
South Africa Mkuzi Game Reserve
Zambia Hillwood
Zambia Source of the Zambezi
Zambia Chitunta Plain
Zambia West Lunga National Park and Lukwakwa Game Management Area
Zambia Sioma Ngwezi National Park
Zambia Nkanga River Conservation Area
Zambia Kafue Flats
Zambia Kafue National Park
Zambia Chimfunshi Wildlife Orphanage
Zambia North Swaka
Zambia Chisamba
Zambia Lower Zambezi National Park
Zambia South Luangwa National Park
Zambia North Luangwa National Park
Zambia Lukususi National Park
Zambia Shiwa Ng'andu
Zambia Lavushi Manda National Park
Zambia Kasanka National Park
Zambia Jimbe Drainage
Zimbabwe Hwange National Park
Zimbabwe Chizarira National Park
Zimbabwe Robert McIlwaine Recreational Park
Zimbabwe Mavuradonha Mountains
Zambia Mutinondo Wilderness
Zambia Nyanje Hills

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Savanna Dry major resident
Shrubland Subtropical/Tropical Dry major resident
Altitude 0 - 1700 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2020) Species factsheet: Calamonastes stierlingi. Downloaded from http://www.birdlife.org on 25/09/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 25/09/2020.