Gray Vireo
- Scientific Name: Vireo Vicinior
- Common Name: Gray Vireo
- Diet: insects, catepillars
- Color: gray
- Size: 5.5 inches
- Active Period: Winter
- Habitat: widespread
- Field Identification: faint eye ring, flips long tail, faint white wing bar
- Nest: cup
- Kingdom: Animalia (Animals)
- Genus: Vireo
- Family: Vireonidae (vireos)
- Order: Passeriformes
- Phylum: Chordata (hollow nerve cord)
- Subphylum: Vertebrata (backbone)
- Species: vicinior