Anna's Hummingbird vs Glittering Starfrontlet
Calypte anna 比較対象 Coeligena orina
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Glittering Starfrontlet |
|---|---|---|
| 学名 | Calypte anna | Coeligena orina |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Endangered |
| 体長 | 10.0 cm (3.9 in) | — |
| 翼開長 | 12.0 cm (4.7 in) | 14.5 cm (5.7 in) |
| 体重 | 4.3 g (0.15 oz) | 6.95 g (0.25 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of high Colombian cloud forest; forages at dense Ericaceae patches. Catches small flies near … |
| 一腹卵数 | 2 | 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.
Glittering Starfrontlet
Sharp, emphatic rattle with forceful onset; rapid dry notes erupting suddenly during active territorial confrontation.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Glittering Starfrontlet
Known from a single locality in western Colombia (Farallones de Citará) at 2,400–3,000 m. Critically endangered.
保全状況
Anna's Hummingbird
Glittering 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
Glittering Starfrontlet
White-tailed Hillstar: males with glittering violet gorget; metallic green above; white tail patches; females green with spotted below
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.
Glittering Starfrontlet
A medium-sized hummingbird (13-14 cm) endemic to the western Andes of Colombia at 3,100-3,500 m. Males have a glittering golden-green forehead. Nectarivore of cloud forest. Critically Endangered due to extremely small known range in the Farallones del Citará.