Geospiza fortis
E616101
Geospiza fortis is a species of Darwin’s finch from the Galápagos Islands, notable for its variable beak size and its central role in studies of natural selection and rapid evolution.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Geospiza fortis canonical | 4 |
| medium ground finch | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6683398 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Geospiza fortis Context triple: [Rosemary Grant, studied, Geospiza fortis]
-
A.
Geospiza scandens
Geospiza scandens is a species of Darwin’s finch from the Galápagos Islands, notable for its cactus-specialist diet and role in studies of rapid evolution and natural selection.
-
B.
Galápagos finches
Galápagos finches are a group of closely related bird species from the Galápagos Islands whose diverse beak shapes famously helped Charles Darwin develop his theory of evolution by natural selection.
-
C.
Charles tree finch
The Charles tree finch is a species of Darwin’s finch endemic to Floreana Island in the Galápagos, known for its adaptive beak morphology and role in studies of evolution and speciation.
-
D.
woodpecker finch
The woodpecker finch is a species of Darwin’s finch from the Galápagos Islands known for its unique habit of using twigs or cactus spines as tools to extract insects from tree bark.
-
E.
Cassin’s Finch
Cassin’s Finch is a small North American songbird in the finch family, noted for the adult male’s rosy-red plumage and melodious warbling song.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Geospiza fortis Target entity description: Geospiza fortis is a species of Darwin’s finch from the Galápagos Islands, notable for its variable beak size and its central role in studies of natural selection and rapid evolution.
-
A.
Geospiza scandens
Geospiza scandens is a species of Darwin’s finch from the Galápagos Islands, notable for its cactus-specialist diet and role in studies of rapid evolution and natural selection.
-
B.
Galápagos finches
Galápagos finches are a group of closely related bird species from the Galápagos Islands whose diverse beak shapes famously helped Charles Darwin develop his theory of evolution by natural selection.
-
C.
Charles tree finch
The Charles tree finch is a species of Darwin’s finch endemic to Floreana Island in the Galápagos, known for its adaptive beak morphology and role in studies of evolution and speciation.
-
D.
woodpecker finch
The woodpecker finch is a species of Darwin’s finch from the Galápagos Islands known for its unique habit of using twigs or cactus spines as tools to extract insects from tree bark.
-
E.
Cassin’s Finch
Cassin’s Finch is a small North American songbird in the finch family, noted for the adult male’s rosy-red plumage and melodious warbling song.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
bird species
ⓘ
chordate ⓘ passerine ⓘ vertebrate ⓘ |
| beakFunction | cracking seeds ⓘ |
| belongsToGroup |
Darwin's finches
ⓘ
linked to:
Galápagos finches
|
| bodySize | medium-sized among ground finches ⓘ |
| class | Aves ⓘ |
| coloration |
females brown and streaked
ⓘ
males mostly black in breeding plumage ⓘ |
| commonName |
medium ground finch
ⓘ
linked to:
Geospiza fortis
|
| conservationStatus | Least Concern ⓘ |
| conservationStatusSystem |
IUCN Red List
ⓘ
linked to:
IUCN Red List of Threatened Species
|
| describedBy | John Gould ⓘ |
| diet |
insects
ⓘ
seeds ⓘ |
| ecologicalRole |
seed disperser
ⓘ
seed predator ⓘ |
| endemicTo | Galápagos Islands ⓘ |
| evolutionarySignificance |
evidence for natural selection in the wild
ⓘ
model for microevolution ⓘ |
| family | Thraupidae ⓘ |
| foundIn | Galápagos Islands ⓘ |
| foundInCountry | Ecuador ⓘ |
| genus | Geospiza ⓘ |
| habitat |
arid lowland shrubland
ⓘ
dry forest ⓘ scrubland ⓘ |
| kingdom | Animalia ⓘ |
| nativeRange | central Galápagos Islands ⓘ |
| notableFor |
rapid evolutionary change
ⓘ
role in studies of natural selection ⓘ variable beak size ⓘ |
| order | Passeriformes ⓘ |
| phylum | Chordata ⓘ |
| relatedTo |
Geospiza fuliginosa
ⓘ
Geospiza magnirostris ⓘ |
| reproduction | lays eggs in nests in shrubs or cacti ⓘ |
| showsTrait |
beak size polymorphism
ⓘ
ecological character displacement ⓘ rapid evolutionary response to drought ⓘ |
| studiedBy |
Peter Grant
ⓘ
Rosemary Grant ⓘ |
| studySite | Daphne Major ⓘ |
| taxonRank | species ⓘ |
| yearDescribed | 1837 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Geospiza fortis Description of subject: Geospiza fortis is a species of Darwin’s finch from the Galápagos Islands, notable for its variable beak size and its central role in studies of natural selection and rapid evolution.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Geospiza fortis