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

Taxonomic note

Geospiza difficilis, G. acutirostris and G. septentrionalis (del Hoyo and Collar 2016) were previously lumped as G. difficilis following SACC (2005 & updates); 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
-	-	D1+2

Red List history

Year	Category	Criteria
2022	Vulnerable	D2
2016	Vulnerable	D1+2
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	39 km2	medium
Area of Occupancy (breeding/resident)	20 km2
Number of locations	2	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	250-999 mature individuals	poor	suspected	2016
Population trend	stable	-	suspected	-
Generation length	3.1 years	-	-	-
Number of subpopulations	2	-	-	-

Population justification: Given the species's extremely small range, its population size is suspected to be small, and is placed here in the range of 250-999 mature individuals.
The subpopulation structure has not been formally investigated, but it is here tentatively assumed that the species forms two separate subpopulations on Wolf and on Darwin.

Trend justification: The population is currently assessed as stable in the absence of any evidence for a decline.

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

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Dry	suitable	resident
Shrubland	Subtropical/Tropical Dry	major	resident
Altitude	0 - 1000 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Philornis downsi	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Rapid Declines		Medium Impact: 6
		Stresses Reduced reproductive success
Invasive and other problematic species, genes & diseases	Viral/prion-induced diseases - Avipoxvirus	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Rapid Declines		Medium Impact: 6
		Stresses Species mortality

---

Recommended citation
BirdLife International (2024) Species factsheet: Vampire Ground-finch Geospiza septentrionalis. Downloaded from https://datazone.birdlife.org/species/factsheet/vampire-ground-finch-geospiza-septentrionalis on 21/12/2024.
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 21/12/2024.