Anna's Hummingbird vs Black-bellied Hummingbird
Calypte anna 比較対象 Eupherusa nigriventris
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Black-bellied Hummingbird |
|---|---|---|
| 学名 | Calypte anna | Eupherusa nigriventris |
| 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) | 9.4 cm (3.7 in) |
| 体重 | 4.3 g (0.15 oz) | 3.3200000000000003 g (0.12 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Feeds on nectar from diverse forest flowers, hovering briefly at each bloom. Takes small insects … |
| 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.
Black-bellied Hummingbird
Soft, high-pitched twittering barely audible; delicate minute notes cascading gently near flowering canopy.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Black-bellied Hummingbird
Found in humid forests of Costa Rica and western Panama at 700-1,800 m. Resident in cloud forest undergrowth.
保全状況
Anna's Hummingbird
Black-bellied 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
Black-bellied Hummingbird
Pavonine Cuckoo: dark iridescent blue-green above; rufous underparts; pale supercilium; long blue-green tail; peacock-eye tail pattern
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.
Black-bellied Hummingbird
コスタリカと西パナマに生息するハチドリで、黒い腹部が特徴。