- 3.5 in
- 4.3 in
- 0.1–0.1 oz
- Colibri calliope (French)
- Chupamirto rafaguitas, Colibrí gorgirrayado (Spanish)
- The Calliope Hummingbird is the smallest bird in North America. Its mass is about one-third that of the smallest North American warblers.
Open montane forest, mountain meadows, and willow and alder thickets, in migration and winter also in chaparral, lowland brushy areas, deserts and semi-desert regions.
No immediate conservation concern has been documented.
- Calder, W. A., and L. L. Calder. 1994. Calliope Hummingbird (Stellula calliope). In The Birds of North America, No. 135 (A. Poole and F. Gill, Eds.). Philadelphia: The Academy of Natural Sciences; Washington, D.C.: The American Ornithologists' Union.