The vireo is 11–14 cm (4–6 inches) in length, with a gray head, back, and flanks, and whitish underparts. It has solid white "spectacles" and white wing bars.
The song, given persistently, consists of short, rough whistled phrases of several notes, spaced about 2 seconds apart. The phrases often alternate ending on a high note and a low note, giving an impression of question and answer.
It prefers open woodlands of the western mountains and foothills. It is usually found in the middle to lower portions of the forest canopy, where it slowly and deliberately forages for insects among the foliage.
Cassin's vireo builds a cup nest out of bark strips and down in the fork of a twig. It lays 2 to 5 white eggs with some brown spots.
This species was formerly considered to belong to the same species as the plumbeous vireo and blue-headed vireo. At that time, this complex of species was referred to as the "solitary vireo".
^BirdLife International (2016). "Vireo cassinii". IUCN Red List of Threatened Species. 2016: e.T22705228A94006862. doi:10.2305/IUCN.UK.2016-3.RLTS.T22705228A94006862.en. Retrieved 25 September 2021.
External linksedit
Wikimedia Commons has media related to Vireo cassinii.
Cassin's Vireo species account Cornell Lab of Ornithology
Cassin's Vireo at USGS
Article & RangeMaps InfoNatura NatureServe
Cassin's Vireo photo gallery VIREO
Cassin's Vireo videos 2007-10-21 at the Wayback Machine on the Internet Bird Collection
December 01, 2023
cassin, vireo, this, article, includes, list, general, references, lacks, sufficient, corresponding, inline, citations, please, help, improve, this, article, introducing, more, precise, citations, august, 2020, learn, when, remove, this, template, message, vir. This article includes a list of general references but it lacks sufficient corresponding inline citations Please help to improve this article by introducing more precise citations August 2020 Learn how and when to remove this template message 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 This bird migrates spending the winter from southern Arizona the Sonoran Desert to southern Mexico Cassin s vireoConservation statusLeast Concern IUCN 3 1 1 Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass AvesOrder PasseriformesFamily VireonidaeGenus VireoSpecies V cassiniiBinomial nameVireo cassiniiXantus J 1858The vireo is 11 14 cm 4 6 inches in length with a gray head back and flanks and whitish underparts It has solid white spectacles and white wing bars The song given persistently consists of short rough whistled phrases of several notes spaced about 2 seconds apart The phrases often alternate ending on a high note and a low note giving an impression of question and answer It prefers open woodlands of the western mountains and foothills It is usually found in the middle to lower portions of the forest canopy where it slowly and deliberately forages for insects among the foliage Cassin s vireo builds a cup nest out of bark strips and down in the fork of a twig It lays 2 to 5 white eggs with some brown spots This species was formerly considered to belong to the same species as the plumbeous vireo and blue headed vireo At that time this complex of species was referred to as the solitary vireo This vireo is named after the ornithologist John Cassin References edit BirdLife International 2016 Vireo cassinii IUCN Red List of Threatened Species 2016 e T22705228A94006862 doi 10 2305 IUCN UK 2016 3 RLTS T22705228A94006862 en Retrieved 25 September 2021 External links edit nbsp Wikimedia Commons has media related to Vireo cassinii Cassin s Vireo species account Cornell Lab of Ornithology Cassin s Vireo at USGS Article amp RangeMaps InfoNatura NatureServe Cassin s Vireo photo gallery VIREO Cassin s Vireo videos Archived 2007 10 21 at the Wayback Machine on the Internet Bird Collection Retrieved from https en wikipedia org w index php title Cassin 27s vireo amp oldid 1185807207, wikipedia, wiki, book, books, library,
