IUCN Conservation Status: Least Concern
The smallest bird in North America north of Mexico, the Calliope Hummingbird inhabits mountain areas of the northwestern United States. It is the smallest long-distance avian migrant in the world, spending its winters in Mexico.
Typical hummingbird twittering and bickering.
All About Birds blog, Here’s What to Feed Your Summer Bird Feeder Visitors, July 11, 2014.