Calliope Hummingbird

Identification

The calliope hummingbird is the smallest bird native to the United States and Canada, measuring just 7–10 cm in length with a wingspan of 11 cm and weighing only 2–3 grams. Despite its diminutive size, it is unmistakable within its range. Adults display glossy green plumage on the back and crown with white underparts. Adult males are particularly striking, featuring distinctive wine-red streaks on the gorget (throat), green flanks, and a dark tail. During territorial or courtship displays, males dramatically distend these gorget feathers outward to create an even more imposing appearance. Females and immature birds are more subdued, with a pinkish wash on the flanks, dark streaks on the throat, and a dark tail with white tips. The similar rufous and Allen's hummingbirds are noticeably larger with more pronounced rufous markings on their tails and flanks.

Range & Habitat

The calliope hummingbird breeds across western North America from southern British Columbia and Alberta south to Colorado and southern California, with nesting typically occurring at higher elevations in the Rocky Mountains. Breeding habitat varies considerably, encompassing open montane forest, mountain meadows, and willow and alder thickets, with nests recorded from as low as 180 m in Oregon and Washington to above 3,400 m near the tree line. During migration and winter, the species moves through lower-elevation chaparral, brushy areas, deserts, and semi-desert regions, with birds wintering mainly in southwestern Mexico after migrating through Arizona, New Mexico, and northern Mexico.

Behaviour & Diet

The calliope hummingbird is the smallest known long-distance bird migrant in the world, completing remarkable twice-yearly migrations of approximately 9,000 km. These birds feed primarily on flower nectar using their long, extendable tongues, and they also drink sap from sapsucker holes and catch insects in flight. They assist in pollination while feeding, with preferred plants including paintbrush, penstemon, columbine, trumpet gilia, and elephant head. Males arrive at breeding grounds from mid-April to early May and vigorously defend territories, often departing before young fledge. Females build distinctive open cup nests in conifer trees, usually beneath overhanging branches, sometimes resembling pine cones themselves. Two eggs are incubated for 15–16 days, with young capable of flight roughly 20 days after hatching.

Best Time & Places to See It

The best opportunities to observe calliope hummingbirds occur during their breeding season from mid-April through July in montane habitats across the western mountains from California to British Columbia. Mountain meadows and open forests with abundant wildflowers offer excellent viewing prospects. Birds generally leave their breeding grounds earlier than most species to exploit late-summer mountain wildflowers. During migration and winter, they can be found in lower-elevation desert and brushy habitats of the Southwest and Mexico.

Photography Tips

Photographing calliope hummingbirds presents challenges due to their tiny size and rapid movement. During courtship displays, males reach wingbeat frequencies of up to 95 flaps per second, creating distinctive buzzing sounds and dramatic visual displays with extended gorget feathers. Males also perform impressive diving displays from heights of 20 metres or more, during which their wing and tail feathers produce sonation sounds. High-speed photography is essential to capture these dynamic moments and the vibrant wine-red gorget coloration of males. Focus on flowery meadows and blooming shrubs during breeding season for the best encounters.