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Ross's Goose

Anser rossii Cassin, 1861

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

Ross's goose (Anser rossii) is a white goose with black wingtips and a relatively short neck. It is the smallest of the three white geese that breed in North America. It is similar in appearance to a white-phase snow goose, but about 40% smaller. Other differences from the snow goose are that the bill is smaller in proportion to its body and lacks "black lips". Like snow geese, Ross's geese may exhibit a darker "blue" phase or morph, though this is extremely rare (<0.01% of adult birds). Before the early 1900s, this goose was considered a rare species, possibly as a consequence of open hunting, but numbers have increased dramatically as a result of conservation measures. It is now listed as a species of Least Concern by the IUCN, and is protected by the Migratory Bird Treaty Act. Ross's goose is named in honor of Bernard R. Ross (1827–1874), who was associated with the Hudson's Bay Company in Canada's Northwest Territories.

Wikipedia contributors, Ross's goose; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T02:55:17.845889+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name
Anser rossii Cassin, 1861
Name authority
Cassin, 1861
Common name
Ross's Goose
Rank
species
Accepted status
accepted
Kingdom
Animalia
Phylum
Chordata
Class
Aves
Order
Anseriformes
Family
Anatidae
Genus
Anser
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. orderAnseriformes
  10. familyAnatidae Leach, 1820
  11. genusAnser Brisson, 1760
  12. speciesAnser rossii Cassin, 1861

Close classified relatives

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

SpeciesClassificationSource status
Pink-footed GooseAnser brachyrhynchus Baillon, 1834AnatidaeChordataAccepted speciesRecorded extant
Bar-headed GooseAnser indicus (Latham, 1790)AnatidaeChordataAccepted speciesRecorded extant
Emperor GooseAnser canagicus (Sevastianov, 1802)AnatidaeChordataAccepted speciesRecorded extant
Lesser White-fronted GooseAnser erythropus (Linnaeus, 1758)AnatidaeChordataAccepted speciesRecorded extant
Bean GooseAnser fabalis (Latham, 1787)AnatidaeChordataAccepted speciesRecorded extant
Blue GooseAnser caerulescens (Linnaeus, 1758)AnatidaeChordataAccepted speciesRecorded extant
Swan GooseAnser cygnoides (Linnaeus, 1758)AnatidaeChordataAccepted speciesRecorded extant
Greater White-fronted GooseAnser albifrons (Scopoli, 1769)AnatidaeChordataAccepted speciesRecorded extant
Graylag GooseAnser anser (Linnaeus, 1758)AnatidaeChordataAccepted speciesRecorded extant

Browse 129 records assigned to Anatidae.

Names & synonyms

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

Recorded nameSource status
Chen rossii (Cassin, 1861) (Cassin, 1861)synonym

Documented distribution

Source distribution statements, not a complete range map. A listed locality is not necessarily a place of origin.

Middle America

North America

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=175035 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:66XWT. Classification follows source parent identifiers. English common names may vary by region.