The Calliope prefers high mountains, and has been seen as high as 11,000 feet. It builds its nests over creeks or over roads next to streams or lakes, usually repairing the previous year's nest or constructing a new one atop the old. This bird usually forages within five feet of the ground.
Average weight: male 2.5 g, female 2.83 g. Female birds are larger than males.
Adult male: Metallic green back and crown, white gorget with purple rays that may be erected to show a "whiskered" effect.
Adult female: Green back and crown, white throat with dark streaks, buff sides, white-tipped tail corners.
Distribution Stellula Calliope
Observed in Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Florida, Idaho, Kansas, Louisiana, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Mexico, North Carolina, Oregon, Pennsylvania, Tennessee, Texas, Utah, Washington, Wyoming, Alberta, British Columbia, and Saskatchewan. Winters in west-central Mexico.
For maps showing population distribution and trends, see the National Biological Service's North American Breeding Bird Survey species account.