Long-tailed Sylph vs Anna's Hummingbird
Aglaiocercus kingii 对比 Calypte anna
Side-by-Side Comparison
| 属性 | Long-tailed Sylph | Anna's Hummingbird |
|---|---|---|
| 学名 | Aglaiocercus kingii | Calypte anna |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | 10.0 cm (3.9 in) |
| 翼展 | 11.7 cm (4.6 in) | 12.0 cm (4.7 in) |
| 体重 | 5.25 g (0.19 oz) | 4.3 g (0.15 oz) |
| 食性 | Nectarivore of Andean cloud forest; forages at Ericaceae and epiphyte blooms. Supplements diet with small … | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … |
| 产卵数 | 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
Long-tailed Sylph
Melodic, flowing phrase with rich character; warm notes weaving in relaxed sequence typical of dawn chorus activity.
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.
Geographic Range & Migration
Long-tailed Sylph
Widespread in Andean cloud forests from Venezuela south through Colombia, Ecuador, Peru, and Bolivia. 1,000–2,800 m.
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
保护状况
Long-tailed Sylph
Anna's Hummingbird
How to Tell Them Apart
Long-tailed Sylph
Rufous Hummingbird: males with brilliant orange-rufous body; iridescent red gorget; females green above; rufous-washed below
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
About These Birds
Long-tailed Sylph
长尾青蜂鸟（Aglaiocercus kingii），体长10厘米（雄鸟尾羽另加13厘米），分布于委内瑞拉至玻利维亚安第斯云雾林。属蜂鸟科（Trochilidae），雄鸟体羽闪烁蓝绿色，长尾羽为求偶展示的重要道具。
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.