Red-tailed Vanga (Calicalicus madagascariensis)

Red-tailed Vanga Calicalicus madagascariensis

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.

IUCN Red list criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2022	Least Concern
2016	Least Concern
2012	Least Concern
2009	Least Concern
2008	Least Concern
2004	Least Concern
2000	Lower Risk/Least Concern
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

Species attributes

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

Distribution

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	619,000
Number of locations		-
Severely Fragmented		-

Population and trend

	Value	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)	1-19	-	-	-
Decline (10 years/3 generation past and future)	1-19	-	-	-
Number of subpopulations		-	-	-
Percentage in largest subpopulation		-	-	-

Population justification: The global population size has not been quantified, but the species is described as common (Morris and Hawkins 1998). In Anjanaharibe Sud Special Reserve, a density of 108 individuals/km² was estimated in humid forest (Hawkins et al. 1998), while an estimate in Zombitse-Vohibasia National Park gave 73-504 individuals/km² (Mustoe et al. 1998).

Trend justification: The species is suspected to be in decline due to ongoing habitat loss and fragmentation. Tree cover loss within the range is currently estimated at 24% across ten years (Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). The species occupies a wide altitudinal range, and although it is sensitive to forest fragmentation (Langrand 1995), it remains common and widespread in the eastern forest where deforestation rates are lower. Therefore, it is tentatively suspected that species may be declining by 1-19% over ten years.

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	Fandriana-Marolambo Forest Corridor NPA (COFAM)

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Dry	major	resident
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Shrubland	Subtropical/Tropical Dry	suitable	resident
Altitude	0 - 1500 m	Occasional altitudinal limits	(max) 2000 m

Threats & impact

Threat (level 1)

Threat (level 2)

Impact and Stresses

Biological resource use

Logging & wood harvesting - Motivation Unknown/Unrecorded

Timing

Scope

Severity

Impact

Ongoing

Majority (50-90%)

Slow, Significant Declines

Medium Impact: 6

Stresses
Species disturbance, Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2023) Species factsheet: Calicalicus madagascariensis. Downloaded from http://www.birdlife.org on 21/03/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 21/03/2023.