CreatureData

Cassin's vireo

Vireo cassinii Xantus de Vesey, 1858

LCLeast Concernsongbirds

The cassin's vireo (Vireo cassinii) is a species in the family Vireonidae, order Passeriformes. Recorded adults weigh 14.6 g to 15.4 g and live up to 7.42 years. Its IUCN Red List status is Least Concern.

Cassin's vireo (Vireo cassinii)
Photo: Dominic Sherony · CC BY-SA 2.0 · Wikimedia Commons

Quick facts about the cassin's vireo

Weight
14.6 g – 15.4 gsrc for Weight
Length
Not recorded
Lifespan
7.42 yearssrc for Lifespan
Diet
Invertivoresrc for Diet
Main food
Not recorded
Habitat
forestsrc for Habitat
Egg incubation
13.5 dayssrc for Egg incubation
Young per litter or clutch
3.88src for Young per litter or clutch
Age at maturity
12 monthssrc for Age at maturity
Litters or clutches a year
1.25src for Litters or clutches a year
Lifestyle
Perchingsrc for Lifestyle
Migration
Migratorysrc for Migration
Conservation status
Least Concern (IUCN)src for Conservation status
Countries on record
Not recorded

Where does the cassin's vireo live?

Not recorded

What is the cassin's vireo?

Quoted from WikipediaCC BY-SA 4.0

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.

From the Wikipedia article “Cassin's vireo” (en.wikipedia.org/w/index.php?title=Cassin%27s_vireo&oldid=1380657881), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.

What does the cassin's vireo sound like?

Christopher Eliot · CC BY-SA 4.0 · Wikimedia Commons

Is the cassin's vireo endangered?

The cassin's vireo is listed as Least Concern on the IUCN Red List: it is not currently at risk of extinction.

  1. LCLeast Concern
  2. NTNear Threatened
  3. VUVulnerable
  4. ENEndangered
  5. CRCritically Endangered
  6. EWExtinct in the Wild
  7. EXExtinct

Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Least Concern species. What the categories mean.

How is the cassin's vireo classified?

  1. kingdomAnimalia
  2. phylumChordata
  3. classAves
  4. orderPasseriformes
  5. familyVireonidae
  6. genusVireo
  7. SpeciesVireo cassinii Xantus de Vesey, 1858

Synonyms Vireo solitarius cassinii

Other names and names in other languages (29)
  • Cassin's solitary vireoEnglish
  • viri de CassinCatalan
  • zelenáček bělouzdičkovýCzech
  • Grå BrillevireoDanish
  • CassinvireoGerman
  • Cassin-VireoGerman
  • kasina vireoEsperanto
  • Vireo de CassinSpanish
  • harmaapäävireoFinnish
  • Viréo de CassinFrench
  • Viréon de CassinFrench
  • bjelogrli vireoCroatian
  • Vireo di CassinItalian
  • ニシフタスジモズモドキJapanese
  • Kasina zaļulisLatvian
  • Cassins VireoDutch
  • kaliforniavireoNorwegian
  • wireonek oliwkowogrzbietyPolish
  • víreo-de-cabeça-cinzentaPortuguese
  • juruviara-de-cabeça-cinzentaPortuguese
  • Виреон КассинаRussian
  • Очковый виреонRussian
  • vireo okuliarnatýSlovak
  • Kasinov zelenićSerbian
  • västvireoSwedish
  • Cassin VireosuTurkish
  • віреон зеленоспиннийUkrainian
  • 卡氏莺雀Chinese
  • 卡辛氏綠鵙Chinese

Catalogue of LifeWikipediaiNaturalistWikidataIUCN Red List

Relatives of the cassin's vireo

Other species in the same genus Vireo.

CompareCassin's vireo vs Red-eyed vireoCassin's vireo vs Black-capped vireoCassin's vireo vs Yellow-throated vireoCassin's vireo vs Blue-headed vireo

Common questions

Answered only where our data holds the answer.

How big is the cassin's vireo?

An adult cassin's vireo weighs 14.6 g – 15.4 g, according to values recorded on Wikidata.

Is the cassin's vireo endangered?

The cassin's vireo is listed as Least Concern on the IUCN Red List, meaning it is not currently at risk of extinction.

How long does the cassin's vireo live?

The cassin's vireo has a recorded lifespan of 7.42 years.

What kind of animal is the cassin's vireo?

The cassin's vireo (Vireo cassinii) belongs to the family Vireonidae in the order Passeriformes.

Sources and how to cite this page

Data as of 2026-11-11. How this page is put together.

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APA

CreatureData. (2026). Cassin's vireo (Vireo cassinii). Retrieved from https://creaturedata.com/animals/cassins-vireo

MLA

“Cassin's vireo (Vireo cassinii).” CreatureData, 2026, https://creaturedata.com/animals/cassins-vireo.

BibTeX
@misc{cassins_vireo_2026,
  title = {Cassin's vireo (Vireo cassinii)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/cassins-vireo},
  note = {Data as of 2026-11-11}
}