Adults are mainly olive-brown on the upperparts with yellow underparts; they have dark eyes and a grey crown. There is a dark line through the eyes and a white stripe just over them. They have thick blue-grey legs and a stout bill. The Philadelphia Vireo is similar in appearance to the Warbling Vireo, but can be reliably distinguished by having much yellower underparts, and dark lores. This bird is a small songbird.
Habitat and Distribution
Philadelphia Vireo 's breeding habitat is the edges of deciduous and mixed woods across Canada. Their breeding habitat is the edges of deciduous and mixed woods across Canada.These birds migrate to Mexico and Central America. This vireo is a very rare vagrant to western Europe. They visit Philadelphia only during migration.
They forage for insects in trees, sometimes hovering or flying to catch insects in flight. They also eat berries, especially before migration.
They make a basket-shaped cup nest in a fork of a tree branch, usually placed relatively high.
Calls and Songs
The songs and calls of Philadelphia Vireo are very similar to those of the Red-eyed Vireo.