Anna's Hummingbird vs Bolivian Starfrontlet
Calypte anna 比較対象 Coeligena violifer
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Bolivian Starfrontlet |
|---|---|---|
| 学名 | Calypte anna | Coeligena violifer |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 10.0 cm (3.9 in) | — |
| 翼開長 | 12.0 cm (4.7 in) | 14.6 cm (5.7 in) |
| 体重 | 4.3 g (0.15 oz) | 7.675 g (0.27 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of Colombian and Venezuelan Andean cloud forest; visits Ericaceae and epiphyte blooms. Gleans small … |
| 一腹卵数 | 2 | -- |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
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.
Bolivian Starfrontlet
Bright, whistled descending phrase; clean notes stepping down smoothly with precision and musical elegance in Andes.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Bolivian Starfrontlet
Found in Andean cloud forests of Bolivia and Peru on the eastern slope at 1,800–3,400 m elevation.
保全状況
Anna's Hummingbird
Bolivian Starfrontlet
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
Bolivian Starfrontlet
Black-hooded Sunbeam: males with glittering magenta gorget; metallic green above; black hood; females plain green above; spotted
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.
Bolivian Starfrontlet
A medium-sized hummingbird (13-14 cm) found in the Andes from Peru to Bolivia at 2,500-3,500 m. Males have violet breast and green body. Nectarivore of cloud forest and páramo edges. An attractive Andean starfrontlet with iridescent violet patches.