NATURAL HISTORY · CATALOGUE RECORD
Cassin's Vireo
Vireo cassinii Xantus de Vesey, 1858
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.
A Cassin's Vireo in Las Cruces, New Mexico
Chuck Homler d/b/a Focus On Wildlife · CC BY-SA 4.0 · Image sourceProvider-generated thumbnail requested at 800 pixels; no local editing Local WebP display rendition; resized without cropping.
Open encyclopedia reference
Cassin's vireo (Vireo cassinii) is a small North American songbird, ranging from southern British Columbia in Canada through the western coastal states of the United States, including California, Oregon, and Washington. The Cassin's Vireo moves down Western United States forests in its migration. During its migration in early spring and late fall, it spends the winter in regions from southern Arizona (the Sonoran Desert) to southern Mexico, including parts of Baja California and the Pacific coast of Mexico.
Wikipedia contributors, Cassin's vireo; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T03:55:37.795313+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Vireo cassinii Xantus de Vesey, 1858
- Name authority
- Xantus de Vesey, 1858
- Common name
- Cassin's Vireo
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Aves
- Order
- Passeriformes
- Family
- Vireonidae
- Genus
- Vireo
- 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
- orderPasseriformes
- familyVireonidae
- genusVireo Vieillot, 1808
- speciesVireo cassinii Xantus de Vesey, 1858
Close classified relatives
These entries share the source’s genus, Vireo. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| black-capped vireoVireo atricapilla Woodhouse, 1852 | VireonidaeChordata | Accepted speciesRecorded extant |
| Slaty VireoVireo brevipennis (P. L. Sclater, 1858) | VireonidaeChordata | Accepted speciesRecorded extant |
| San Andres VireoVireo caribaeus Bond & Meyer de Schauensee, 1942 | VireonidaeChordata | Accepted speciesRecorded extant |
| Thick-billed VireoVireo crassirostris (H. Bryant, 1859) | VireonidaeChordata | Accepted speciesRecorded extant |
| Yellow-throated VireoVireo flavifrons Vieillot, 1808 | VireonidaeChordata | Accepted speciesRecorded extant |
| Yellow-green VireoVireo flavoviridis (Cassin, 1851) | VireonidaeChordata | Accepted speciesRecorded extant |
| Warbling VireoVireo gilvus (Vieillot, 1808) | VireonidaeChordata | Accepted speciesRecorded extant |
| Brown-capped VireoVireo leucophrys (Lafresnaye, 1844) | VireonidaeChordata | Accepted speciesRecorded extant |
| Choco VireoVireo masteri P. G. W. Salaman & F. G. Stiles, 1996 | VireonidaeChordata | Accepted speciesRecorded extant |
| Blue Mountain VireoVireo osburni (P. L. Sclater, 1861) | VireonidaeChordata | Accepted speciesRecorded extant |
| Plumbeous VireoVireo plumbeus Coues, 1866 | VireonidaeChordata | Accepted speciesRecorded extant |
| Blue-headed VireoVireo solitarius (A. Wilson, 1810) | VireonidaeChordata | Accepted speciesRecorded extant |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Vireo solitarius cassinii Xantus de Vesey, 1858 Xantus de Vesey, 1858 | synonym |
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.
- https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=554456 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.
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:5BJKK. Classification follows source parent identifiers. English common names may vary by region.