Red-tailed Comet
Sappho sparganurus
- Least concern
- Card rarity: Common
- Birds

The red-tailed comet is a medium-sized hummingbird belonging to tribe Lesbiini of subfamily Lesbiinae, the "coquettes". It is found in Argentina and Bolivia and possibly Chile and Peru.
Classification
- Class
- Aves
- Order
- Apodiformes
- Family
- Trochilidae
- Genus
- Sappho