Variable Hawk

Open encyclopedia reference

The variable hawk (Geranoaetus polyosoma) is a polymorphic species of bird of prey in the family Accipitridae.

It is widespread and often common in open habitats in western and southern South America, including the Falkland Islands. Its taxonomy is disputed, with some splitting it into the widespread red-backed hawk (G. polyosoma) and the Puna hawk or Gurney's hawk (G. poecilochrous) of the central and north Andean highlands, but the differences between the two are unclear. Most recent authorities have supported the lumping together of the two hawks although the issue still is controversial. On the contrary, the rare taxon from the Juan Fernández Islands is relatively distinctive, and possibly worthy of species recognition as the Juan Fernández hawk (B. exsul). In this article and most current accounts, the three races are regarded as subspecies.

Wikipedia contributors, Variable hawk; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T03:31:03.817582+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name

Geranoaetus polyosoma (Quoy & Gaimard, 1824)

Name authority

(Quoy & Gaimard, 1824)

Common name

Variable Hawk

Rank

species

Accepted status

accepted

Kingdom

Animalia

Phylum

Chordata

Class

Aves

Order

Accipitriformes

Family

Accipitridae

Genus

Geranoaetus

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.

1. domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
2. kingdomAnimalia
3. phylumChordata
4. subphylumVertebrata
5. infraphylumGnathostomata
6. parvphylumOsteichthyes
7. megaclassTetrapoda
8. classAves
9. orderAccipitriformes
10. familyAccipitridae Vigors, 1824
11. genusGeranoaetus Kaup, 1844
12. speciesGeranoaetus polyosoma (Quoy & Gaimard, 1824)

Close classified relatives

These entries share the source’s genus, Geranoaetus. They are not necessarily the closest relatives established by molecular evidence.

Browse 170 records assigned to Accipitridae.

Names & synonyms

Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.

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.

1. https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=1253667 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:CV6ND. Classification follows source parent identifiers. English common names may vary by region.