Vireo, Philadelphia bird picturesPHILADELPHIA VIREO
626. Vireosylva philadelphica. 5 inches
This is one of the least common of the eastern Vireos, although it is more common
than most people know; its song is not distinctive and it keeps high up in trees, so it is not usually noticed. Their nests are swung from branches at high altitudes and are seldom found.