Any one of numerous species of American singing birds belonging to
Vireo and allied genera of the family
Vireonidæ. In many of the species the back is greenish, or olive-colored. Called also
greenlet. [
1913 Webster]
" In the Eastern United States the most common species are the white-eyed vireo (Vireo Noveboracensis), the red-eyed vireo (Vireo olivaceus), the blue-headed, or solitary, vireo (Vireo solitarius), the warbling vireo (Vireo gilvus), and the yellow-throated vireo (Vireo flavifrons). All these are noted for the sweetness of their songs."
[1913 Webster]