School of Life Sciences | Ask A Biologist

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Why is Rudolp's nose red?

Bird Details

Perching Perching

Cassin's Vireo

Vireo cassinii

Cassin's Vireo
copyright Herbert Clarke
Length: 6 in. (14 cm)
Occurring in the tops of mixed deciduous and coniferous forests, the Cassin's Vireo is most easily located by its persistent song. Its cup-like nest is suspended in the fork of a small branch and made of grass and lichens. Insects make up most of the diet, but in mid-winter some fruits are eaten. The four-digit banding code is CAVI.
cassins_vireo.jpg

Male
copyright Herbert Clarke

cassins_vireo_2_niehuis.jpg

Female
copyright Oliver Niehuis

Chaparral
Chaparral

Fir forest
Fir forest

Oak-pine woodland
Oak-pine woodland

Riparian / River forest
Riparian / River forest

Mesquite bosque
Mesquite bosque

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Male
Buzzing (sound type)
Bird Call
Download sound

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CR_CAVI_051102_S.jpg
Male
Buzzing (sound type)
Bird Call

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Be part of Ask A Biologist

by volunteering, or simply sending us feedback on the site. Scientists, teachers, writers, illustrators, and translators are all important to the program. If you are interested in helping with the website we have a Volunteer page to get the process started.