Anna's Hummingbird vs Volcano Hummingbird
Calypte anna compared with Selasphorus flammula
Side-by-Side Comparison
| Attribute | Anna's Hummingbird | Volcano Hummingbird |
|---|---|---|
| Scientific Name | Calypte anna | Selasphorus flammula |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Trochilidae | Trochilidae |
| Conservation Status | Least Concern | Least Concern |
| Length | 10.0 cm (3.9 in) | — |
| Wingspan | 12.0 cm (4.7 in) | 8.0 cm (3.1 in) |
| Weight | 4.3 g (0.15 oz) | 2.6999999999999997 g (0.10 oz) |
| Diet | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Highland nectarivore of Costa Rican volcanoes, feeding at Fuchsia and bromeliads. Captures small arthropods for … |
| Clutch Size | 2 | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Shared Habitats
None
Anna's Hummingbird only
Volcano Hummingbird only
Anna's Hummingbird
Chaparral, coastal sage scrub, gardens, parks, and open woodland along the Pacific coast. One of few hummingbirds not fully migratory.
Song & Call Comparison
Anna's Hummingbird
Male produces a complex, scratchy song with buzzy 'dzzzzt' notes. Gives a nasal 'chee-chee-chee'. Males sing year-round, even in winter; one of few hummingbirds with true song.
Volcano Hummingbird
Sharp, crackling trill with percussive edge; rapid dry notes delivered forcefully during territorial encounter.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Volcano Hummingbird
Endemic to the highlands of Costa Rica at 1,800-3,500 m, particularly around volcanic peaks. Resident in páramo and elfin forest.
Conservation Status
Anna's Hummingbird
Volcano Hummingbird
How to Tell Them Apart
Anna's Hummingbird
Metallic bronze-green upperparts. Males have an iridescent rose-red crown and gorget. Females have green upperparts with grey underparts and a small red gorget patch.
Medium-length, straight, thin black bill
Volcano Hummingbird
About These Birds
Anna's Hummingbird
Anna's hummingbird is the most common hummingbird along the Pacific coast and one of only three species resident in the United States year-round. Males perform spectacular dive displays, plummeting from 40 meters and pulling up with a loud chirp produced by tail feathers. Their body temperature can drop to near ambient at night to conserve energy.
Volcano Hummingbird
A tiny hummingbird (7-8 cm) endemic to the highlands of Costa Rica at 1,800-3,500 m, particularly around volcanic peaks. Males have a brilliantly colored gorget varying geographically from magenta to gray-purple. Nectarivore of páramo and high-elevation gardens.