NATURAL HISTORY · CATALOGUE RECORD
Willow Grouse
Lagopus lagopus (Linnaeus, 1758)
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 willow ptarmigan ( TAR-mi-gən; Lagopus lagopus) is a bird in the grouse tribe Tetraonini of the pheasant family Phasianidae. It is also known as the willow grouse. The willow ptarmigan breeds in birch and other forests and moorlands in northern Europe, the tundra of Scandinavia, Siberia, Alaska, and Canada, in particular in the provinces of Newfoundland and Labrador and Quebec. It is the state bird of Alaska. In the summer, the birds are largely brown, with dappled plumage, while in the winter, they are white with some black feathers in their tails. The species has remained little changed from the bird that roamed the tundra during the Pleistocene. Nesting takes place in the spring when clutches of four to 10 eggs are laid in a scrape on the ground. The chicks are precocial, so soon leave the nest. While they are young, both parents play a part in caring for them.
Wikipedia contributors, Willow ptarmigan; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T03:31:11.925031+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Lagopus lagopus (Linnaeus, 1758)
- Name authority
- (Linnaeus, 1758)
- Common name
- Willow Grouse
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Aves
- Order
- Galliformes
- Family
- Phasianidae
- Genus
- Lagopus
- 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
- orderGalliformes
- familyPhasianidae
- genusLagopus Brisson, 1760
- speciesLagopus lagopus (Linnaeus, 1758)
Close classified relatives
These entries share the source’s genus, Lagopus. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| White-tailed PtarmiganLagopus leucura (Richardson, 1831) | PhasianidaeChordata | Accepted speciesRecorded extant |
| Rock PtarmiganLagopus muta (Montin, 1781) | PhasianidaeChordata | Accepted speciesRecorded extant |
Documented distribution
Source distribution statements, not a complete range map. A listed locality is not necessarily a place of origin.
North America
Southern Asia
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=175804 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:3RXR6. Classification follows source parent identifiers. English common names may vary by region.