Cassin’s Vireo is intermediate in coloration, and the westernmost in range, of the similar trio of species formerly collectively called Solitary Vireo; Blue-headed Vireo and Plumbeous Vireo are the other two.
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Cassin’s Vireo
Calliope Crossing, Sisters, OR
April 30, 2010 ©John Schwarz
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Cassin’s Vireo
Calliope Crossing, Sisters, OR
April 30, 2010 ©John Schwarz
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Cassin’s Vireo
Calliope Crossing, Sisters, OR
April 30, 2010 ©John Schwarz
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Cassin’s Vireo
Calliope Crossing, Sisters, OR
April 30, 2010 ©John Schwarz
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Cassin’s Vireo
Calliope Crossing, Sisters, OR
April 30, 2010 ©John Schwarz
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Cassin’s Vireo
Calliope Crossing, Sisters, OR
April 30, 2010 ©John Schwarz
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Cassin’s Vireo
Upper Miller Canyon, Cochise County, AZ
May 31, 2013 ©John Schwarz
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Cassin’s Vireo
Upper Miller Canyon, Cochise County, AZ
May 31, 2013 ©John Schwarz
