Black-Tailed Gnatcatcher
- Scientific Name: Polioptila Melanura
- Common Name: Black-Tailed Gnatcatcher
- Diet: insects
- Color: gray
- Size: 4.5 inches
- Active Period: Year-round
- Habitat: widespread
- Field Identification: white eye ring, white outer tail feathers
- Nest: tiny cup
- Kingdom: Animalia (Animals)
- Genus: Polioptila
- Family: Sylviidae (gnatcatchers)
- Order: Passeriformes
- Phylum: Chordata (hollow nerve cord)
- Subphylum: Vertebrata (backbone)
- Species: melanura
