Length: About 5¾ inches.

Male and Female: Grayish-olive above; indistinct whitish line over eye; under parts grayish-white with a faint yellowish tinge; no bars on wings; iris dark brown, not reddish.

Note: A nasal yah, not unlike the call-note of the red-eyed vireo.

Song: A sweet continuous warble, with a rising inflection at the end. It sounds like a whistled Whew-whew-whew whew-whew-whew-whee?

Habitat: Parks and shaded village streets. Its neutral coloring and its preference for treetops make it difficult to distinguish. Its cheerful, pleasant song is the surest means of identification.

Range: Eastern North America. Breeds from south-central Canada to northwestern Texas, southern Louisiana, North Carolina, and Virginia; winters south of the United States, though exact locality is unknown. Not nearly so widely distributed as the red-eyed vireo.

This vireo, like other members of its family, is an indefatigable devourer of insects. Mr. Forbush reports that it feeds on flies, mosquitoes, and grasshoppers, but that its chief food consists of caterpillars and other leaf-eating insects, especially the elm-leaf beetle; consequently it is found frequently in elm-shaded streets and yards.