In North America, Philadelphia Vireo breeds in Canada and only in the very northern US along the Canadian border, so most sightings in the US tend to occur during migration, especially fall migration.
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Philadelphia Vireo
Bluff Point State Park, Groton, CT
September 11, 2012 ©John Schwarz
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Philadelphia Vireo
Bluff Point State Park, Groton, CT
September 11, 2012 ©John Schwarz
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Philadelphia Vireo
Bluff Point State Park, Groton, CT
September 11, 2012 ©John Schwarz
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Philadelphia Vireo
Savegre Lodge environs, Costa Rica
January 7, 2008 ©John Schwarz
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Philadelphia Vireo
Savegre Lodge environs, Costa Rica
January 7, 2008 ©John Schwarz
