Medium Ground-finch (Geospiza fortis) - BirdLife species factsheet

Medium Ground-finch Geospiza fortis

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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.

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	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

Species attributes

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

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	37,200 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	-	suspected	-
Generation length	3.19 years	-	-	-

Population justification: The global population size has not been quantified, but this species is described as 'fairly common' (Stotz et al. 1996). The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Country/territory distribution

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

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name
Ecuador	Áreas costeras de Fernandina y del occidente de Isabela
Ecuador	Champion y Gardner de Floreana
Ecuador	Humedales del Sur de Isabela
Ecuador	Isla Española
Ecuador	Isla Floreana
Ecuador	Isla San Cristóbal
Ecuador	Puerto Ayora
Ecuador	Tierras altas de Isabela
Ecuador	Tierras altas de Santa Cruz
Ecuador	Tierras altas de Santiago

Habitats & altitude

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

Recommended citation
BirdLife International (2024) Species factsheet: Medium Ground-finch Geospiza fortis. Downloaded from https://datazone.birdlife.org/species/factsheet/medium-ground-finch-geospiza-fortis on 25/11/2024.
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 25/11/2024.