Ross's Goose
Anser rossii Cassin, 1861
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.
- domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
- kingdomAnimalia
- phylumChordata
- subphylumVertebrata
- infraphylumGnathostomata
- parvphylumOsteichthyes
- megaclassTetrapoda
- classAves
- orderAnseriformes
- familyAnatidae Leach, 1820
- genusAnser Brisson, 1760
- 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.
| Species | Classification | Source status |
|---|---|---|
| Pink-footed GooseAnser brachyrhynchus Baillon, 1834 | AnatidaeChordata | Accepted speciesRecorded extant |
| Bar-headed GooseAnser indicus (Latham, 1790) | AnatidaeChordata | Accepted speciesRecorded extant |
| Emperor GooseAnser canagicus (Sevastianov, 1802) | AnatidaeChordata | Accepted speciesRecorded extant |
| Lesser White-fronted GooseAnser erythropus (Linnaeus, 1758) | AnatidaeChordata | Accepted speciesRecorded extant |
| Bean GooseAnser fabalis (Latham, 1787) | AnatidaeChordata | Accepted speciesRecorded extant |
| Blue GooseAnser caerulescens (Linnaeus, 1758) | AnatidaeChordata | Accepted speciesRecorded extant |
| Swan GooseAnser cygnoides (Linnaeus, 1758) | AnatidaeChordata | Accepted speciesRecorded extant |
| Greater White-fronted GooseAnser albifrons (Scopoli, 1769) | AnatidaeChordata | Accepted speciesRecorded extant |
| Graylag GooseAnser anser (Linnaeus, 1758) | AnatidaeChordata | Accepted speciesRecorded extant |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source 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.
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.
- 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.