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

Taxonomic note

Hypsipetes parvirostris and H. moheliensis (del Hoyo and Collar 2016) were previously lumped as H. parvirostris following Dowsett & Forbes-Watson (1993) and Sibley & Monroe (1990, 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.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2022	Near Threatened	B1ab(ii,iii)+2ab(ii,iii)
2016	Vulnerable	C2a(ii)

Migratory status	not a migrant	Forest dependency	Medium
Land mass type		Average mass	60 g

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	1,300
Extent of Occurrence breeding/resident (km2)	1,252
Number of locations		-
Severely Fragmented		-

	Value	Data quality	Derivation	Year of estimate
No. of mature individuals	2500-9999	poor	suspected	2016
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)	1-5	-	-	-
Decline (10 years/3 generation past and future)	1-9	-	-	-
Number of subpopulations	1	-	-	-
Percentage in largest subpopulation	100	-	-	-
Generation length (yrs)	3.83	-	-	-

Population justification: This species is reasonably common (with encounter rates of 25 birds/hr [Safford 2013]), although less common above 1,000m (Louette 2004). Based on descriptions of abundance, and assuming only a proportion of its restricted range is inhabited, this species is not thought to number more than 10,000 mature individuals. Therefore, it is tentatively placed in the range of 2,500-9,999 mature individuals.

Trend justification: The population is suspected to be slowly declining owing to on-going habitat loss and degradation. Deforestation rates have been low over the past three generations, amounting to 4% (Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). Given that the species can tolerate degraded areas and clearings, any population decline is likely to be slower than this, therefore the decline is not expected to exceed 5% over three generations.

Country/Territory	Occurrence status	Presence	Resident	Breeding	Non-breeding	Passage
Comoros	N	Extant	Yes

Country/Territory	IBA Name
Comoros	Karthala Mountains
Comoros	La Grille Mountains

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Subtropical/Tropical Heavily Degraded Former Forest	suitable	resident
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	suitable	resident
Altitude	500 - 1000 m	Occasional altitudinal limits	(max) 1850 m

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Small-holder farming	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2023) Species factsheet: Hypsipetes parvirostris. Downloaded from http://www.birdlife.org on 02/04/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 02/04/2023.