Gyrfalcon

Open encyclopedia reference

The gyrfalcon ( or ) (Falco rusticolus), also abbreviated as gyr, is a bird of prey and the largest species in the falcon family, Falconidae. A high-latitude species, the gyrfalcon breeds on the Arctic coasts and tundra, the islands of northern North America and Siberia, where it is mainly a resident species. Some gyrfalcons disperse more widely after the breeding season or in winter, and individual vagrancy can take birds for long distances. Its plumage varies with location, with birds being coloured from all-white to dark grey-brown. These colour variations are called morphs. Like other falcons, it shows sexual dimorphism, with the female much larger than the male.

For centuries, the gyrfalcon has been valued as a hunting bird. Typical prey includes the ptarmigan and waterfowl, which it may attack in flight; and it also hunts fish and small mammals.

Wikipedia contributors, Gyrfalcon; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T01:23:21.036259+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name

Falco rusticolus Linnaeus, 1758

Name authority

Linnaeus, 1758

Common name

Gyrfalcon

Rank

species

Accepted status

accepted

Kingdom

Animalia

Phylum

Chordata

Class

Aves

Order

Falconiformes

Family

Falconidae

Genus

Falco

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. orderFalconiformes
10. familyFalconidae Leach, 1820
11. subfamilyFalconinae Leach, 1820
12. genusFalco Linnaeus, 1758
13. speciesFalco rusticolus Linnaeus, 1758

Close classified relatives

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

Browse 57 records assigned to Falconidae.

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=175599 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:3DTGR. Classification follows source parent identifiers. English common names may vary by region.