NATURAL HISTORY · CATALOGUE RECORD
Medium Tree Finch
Camarhynchus pauper Ridgway, 1890
Source-backed taxonomic record
Accepted species in Catalogue of Life’s 11 September 2026 base release. This preserves the source classification and available supporting data; it is not a completed species monograph.
Open encyclopedia reference
The medium tree finch (Camarhynchus pauper) is a species of Darwin's finch. It is endemic to the Galápagos Islands, where it occurs only on Floreana Island. Its name derives from its intermediate size between the small tree finch and large tree finch. Due to its limited geographic range and its high breeding mortality following the introduction of the parasitic avian vampire fly, the medium tree finch is listed as critically endangered on the IUCN Red List.
Wikipedia contributors, Medium tree finch; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T08:09:22.615846+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Camarhynchus pauper Ridgway, 1890
- Name authority
- Ridgway, 1890
- Common name
- Medium Tree Finch
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Aves
- Order
- Passeriformes
- Family
- Thraupidae
- Genus
- Camarhynchus
- Extinction status
- Recorded extant
Classification family tree
Nested taxonomic groups from the source. This is not a direct-ancestor chain, a dated evolutionary tree or a phylogenetic reconstruction.
- domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
- kingdomAnimalia
- phylumChordata
- subphylumVertebrata
- infraphylumGnathostomata
- parvphylumOsteichthyes
- megaclassTetrapoda
- classAves
- orderPasseriformes
- familyThraupidae
- genusCamarhynchus Gould, 1837
- speciesCamarhynchus pauper Ridgway, 1890
Close classified relatives
These entries share the source’s genus, Camarhynchus. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Mangrove FinchCamarhynchus heliobates (Snodgrass & Heller, 1901) | ThraupidaeChordata | Accepted speciesRecorded extant |
| Woodpecker FinchCamarhynchus pallidus (P. L. Sclater & Salvin, 1870) | ThraupidaeChordata | Accepted speciesRecorded extant |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Geospiza pauper (Ridgway, 1890) (Ridgway, 1890) | synonym |
Documented distribution
Source distribution statements, not a complete range map. A listed locality is not necessarily a place of origin.
Source literature & publication evidence
References attached to this source record, including nomenclatural citations where supplied. This is a selected bibliography; abbreviated citations remain in the source’s form.
- https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=559005 Source fields: Taxon.tsv dwc:namePublishedIn, Taxon.tsv dcterms:references
Origins, evidence & remaining research
Name authority and publication references document nomenclature where the source supplies it. They do not establish evolutionary origins or the earliest fossil occurrence.
Specimen-level evidence, morphology, ecological research, phylogenetic studies, a comprehensive bibliography and a located literary passage have not yet been compiled for this record. A suitable sourced image remains to be added.
Dataset citation & attribution
This exact taxon in ChecklistBank · Catalogue of Life 2026-09-11
Catalogue of Life 2026-09-11; dataset 316321; doi:10.48580/dgz5n. https://creativecommons.org/licenses/by/4.0/ . Retrieved 5 October 2026.
Stable key: col:Q8FB. Classification follows source parent identifiers. English common names may vary by region.