CreatureData

Medium ground finch

Geospiza fortis Gould, 1837

LCLeast Concernsongbirds

The medium ground finch (Geospiza fortis) is a species in the family Thraupidae, order Passeriformes. Recorded adults weigh 18.3 g to 24 g. Its IUCN Red List status is Least Concern.

Medium ground finch (Geospiza fortis)
Photo: Charles J. Sharp · CC BY-SA 3.0 · Wikimedia Commons

Quick facts about the medium ground finch

Weight
18.3 g – 24 gsrc for Weight
Length
Not recorded
Lifespan
Not recorded
Diet
Granivoresrc for Diet
Main food
Not recorded
Habitat
shrublandsrc for Habitat
Young per litter or clutch
4src for Young per litter or clutch
Age at maturity
12 monthssrc for Age at maturity
Lifestyle
Terrestrialsrc for Lifestyle
Migration
Sedentarysrc for Migration
Conservation status
Least Concern (IUCN)src for Conservation status
Countries on record
Not recorded

Photos of the medium ground finch

Only freely licensed photos are shown. Each carries its creator and licence.

1 more photo exists under a licence we cannot display: view at source.

Where does the medium ground finch live?

Not recorded

What is the medium ground finch?

Quoted from WikipediaCC BY-SA 4.0

The medium ground finch (Geospiza fortis) is a species of bird in the family Thraupidae. It is endemic to the Galápagos Islands. Its primary natural habitat is tropical shrubland. One of Darwin's finches, the species was the first which scientists have observed evolving in real-time.

Many studies and research have been conducted on medium ground finches: there are the most famous studies conducted by Charles Darwin and more recent studies conducted in relation to the changes revolving around the medium ground finches due to natural selection. Due to an increase in urbanization on the Galápagos Islands, droughts and climate change, character displacement, changes in the finch's habitat and range, inbreeding and nesting, parasites, and viruses, medium ground finches have gone through changes. Changes that have been observed are beak size, behavior in feeding, behavior in inbreeding, behaviors in nesting, antibody development and more. The changes in the Galápagos Islands are factors that affect the medium ground finches.

From the Wikipedia article “Medium ground finch” (en.wikipedia.org/w/index.php?title=Medium_ground_finch&oldid=1380696160), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.

Is the medium ground finch endangered?

The medium ground finch is listed as Least Concern on the IUCN Red List: it is not currently at risk of extinction.

  1. LCLeast Concern
  2. NTNear Threatened
  3. VUVulnerable
  4. ENEndangered
  5. CRCritically Endangered
  6. EWExtinct in the Wild
  7. EXExtinct

Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Least Concern species.

How is the medium ground finch classified?

  1. kingdomAnimalia
  2. phylumChordata
  3. classAves
  4. orderPasseriformes
  5. familyThraupidae
  6. genusGeospiza
  7. SpeciesGeospiza fortis Gould, 1837

Synonyms Geospiza bauri, Geospiza dubia simillima, Geospiza fortis platyrhyncha

Other names and names in other languages (39)
  • Medium ground-finchEnglish
  • Medium ground-finchEnglish
  • Medium ground-finchEnglish
  • شرشور الأرض المتوسطArabic
  • Pinsà de Darwin mitjàCatalan
  • pinsà de Darwin intermediCatalan
  • pěnkavka prostředníCzech
  • pila daear canoligWelsh
  • Mellem DarwinfinkeDanish
  • MittelgrundfinkGerman
  • Mittel-GrundfinkGerman
  • mezbeka grundotangaroEsperanto
  • Pinzón mediano de tierraSpanish
  • Pinzón de Darwin picomedianoSpanish
  • tume-maasirkEstonian
  • maasirkkuFinnish
  • Géospize à bec moyenFrench
  • batokljuna darwinova zebaCroatian
  • közepes földipintyHungarian
  • Fringuello terricolo medioItalian
  • Fringuello terragnolo intermedioItalian
  • ガラパゴスフィンチJapanese
  • vidutinė dirvinė startaLithuanian
  • Middelste GrondvinkDutch
  • mellomjordspurvNorwegian
  • darwinka czarnaPolish
  • galapaguito-de-bico-médioPortuguese
  • tentilhão-da-terra-de-bico-médioPortuguese
  • tentilhão-terrestre-médioPortuguese
  • Средний земляной вьюрокRussian
  • Средний галапагосский вьюрокRussian
  • ostrovčan zemnýSlovak
  • Srednja galapagoska zeba sa tlaSerbian
  • mellandarwinfinkSwedish
  • mellandarwintangaraSwedish
  • Ortanca Yer İspinozuTurkish
  • землянчик середнійUkrainian
  • 中地雀Chinese
  • 勇地雀Chinese

Catalogue of LifeWikipediaiNaturalistWikidataIUCN Red List

Relatives of the medium ground finch

Other species in the same genus Geospiza.

CompareMedium ground finch vs Española cactus finchMedium ground finch vs Large ground finchMedium ground finch vs Small ground finchMedium ground finch vs Sharp-beaked ground finch

Common questions

Answered only where our data holds the answer.

How big is the medium ground finch?

An adult medium ground finch weighs 18.3 g – 24 g, according to values recorded on Wikidata.

Is the medium ground finch endangered?

The medium ground finch is listed as Least Concern on the IUCN Red List, meaning it is not currently at risk of extinction.

What kind of animal is the medium ground finch?

The medium ground finch (Geospiza fortis) belongs to the family Thraupidae in the order Passeriformes.

Sources and how to cite this page

Data as of 2026-11-11. How this page is put together.

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APA

CreatureData. (2026). Medium ground finch (Geospiza fortis). Retrieved from https://creaturedata.com/animals/medium-ground-finch

MLA

“Medium ground finch (Geospiza fortis).” CreatureData, 2026, https://creaturedata.com/animals/medium-ground-finch.

BibTeX
@misc{medium_ground_finch_2026,
  title = {Medium ground finch (Geospiza fortis)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/medium-ground-finch},
  note = {Data as of 2026-11-11}
}