LC
Cryptic Warbler Cryptosylvicola randrianasoloi



Taxonomy

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.
Goodman, S. M.; Langrand, O.; Whitney, B. M. 1996. A new genus and species of passerine from the eastern rain forest of Madagascar. Ibis 138: 153-159.

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 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Not Recognised
1988 Not Recognised
Species attributes

Migratory status not a migrant Forest dependency High
Land mass type Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 245,000
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 Decreasing 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) 3.6 - - -

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

Trend justification: The population is suspected to be in decline owing to ongoing habitat destruction.


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Madagascar Andohahela National Park - Section I
Madagascar Andringitra National Park
Madagascar Anjozorobe Forest
Madagascar Bidia Classified Forest
Madagascar Kalambatritra Special Reserve
Madagascar Mantadia National Park and Analamazaotra Special Reserve
Madagascar Marojejy National Park
Madagascar Onive Classified Forest
Madagascar South Anjanaharibe Special Reserve and extension
Madagascar Tsaratanana Strict Nature Reserve and extension
Madagascar Upper Rantabe Classified Forest
Madagascar Zahamena National Park and Strict Reserve

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane major resident
Altitude 900 - 2500 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2019) Species factsheet: Cryptosylvicola randrianasoloi. Downloaded from http://www.birdlife.org on 20/06/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 20/06/2019.