Cryptic Warbler (Cryptosylvicola randrianasoloi)

Cryptic Warbler Cryptosylvicola randrianasoloi

Current view: Data table and detailed info

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
2024	Least Concern
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	-

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	245,000 km²
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	-
Generation length	2.42 years	-	-	-

Population justification: The global population size has not been quantified, but the species is described as locally common (del Hoyo et al. 2006). This species is considered to have a high dependency on forest habitat, and tree cover is estimated to have declined by 15.4% within its mapped range over the past 10 years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). It is therefore tentatively suspected that this rate of cover loss may have led to a decline of between 1-19% in the species' population size over the same time frame, with a best estimate of reduction being 15-19%.

Trend justification: .

Country/territory distribution

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Madagascar	extant	native		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 (2024) Species factsheet: Cryptic Warbler Cryptosylvicola randrianasoloi. Downloaded from https://datazone.birdlife.org/species/factsheet/cryptic-warbler-cryptosylvicola-randrianasoloi on 23/11/2024.
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 23/11/2024.