• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Taxonomic note

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.; Pidgeon, M.; Hawkins, A. F. A.; Schulenberg, T. S. 1997. Vangidae. In: Goodman, S. M.; Pidgeon, M.; Hawkins, A. F. A.; Schulenberg, T. S. (ed.), The birds of southeastern Madagascar, pp. 80-86. Field Museum of Natural History, Chicago, IL.
Goodman, S. M.; Pidgeon, M.; Hawkins, A. F. A.; Schulenberg, T. S. 1997. Vangidae. In: Goodman, S. M.; Pidgeon, M.; Hawkins, A. F. A.; Schulenberg, T. S. (ed.), The birds of southeastern Madagascar, pp. 80-86. Field Museum of Natural History, Chicago, IL.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	D1

Red List history

Year	Category	Criteria
2016	Vulnerable	D1
2012	Vulnerable	D1
2008	Vulnerable	D1
2004	Vulnerable
2000	Vulnerable
1994	Not Recognised
1988	Not Recognised

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	16,700 km2	medium
Number of locations	11-100	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	250-999 mature individuals	medium	estimated	1999
Population trend	stable	poor	suspected	1998-2008
Generation length	7.1 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The population estimate of 250-999 mature individuals is based on an assessment by Hawkins et al. (1998) that 30-100 pairs occur at the site of rediscovery, and that it occurs at low density at additional sites to the south. This estimate equates to 375-1,499 individuals in total, rounded here to 350-1,500 individuals, although with continued re-assessment and a potentially wider range than conservatively estimated, its population size may prove to be larger (R. Safford in litt. 2016).

Trend justification: The population is suspected to be stable, as much of the species's habitat remains intact.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Madagascar	extant	native	yes

Country/Territory	IBA Name
Madagascar	Mahafaly Plateau Forest complex
Madagascar	Saint Augustin Forest

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Shrubland	Subtropical/Tropical Dry	major	resident
Altitude	0 - 100 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Agro-industry farming	Timing		Scope		Severity		Impact
		Future		Majority (50-90%)		Unknown		Unknown
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Livestock farming & ranching - Small-holder grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Negligible declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Negligible declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Red-shouldered Vanga Calicalicus rufocarpalis. Downloaded from https://datazone.birdlife.org/species/factsheet/red-shouldered-vanga-calicalicus-rufocarpalis 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.