Anna's Hummingbird vs Blue-tailed Emerald
Calypte anna 对比 Chlorostilbon mellisugus
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Blue-tailed Emerald |
|---|---|---|
| 学名 | Calypte anna | Chlorostilbon mellisugus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 10.0 cm (3.9 in) | — |
| 翼展 | 12.0 cm (4.7 in) | 9.0 cm (3.5 in) |
| 体重 | 4.3 g (0.15 oz) | 2.6466666666666665 g (0.09 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore visiting diverse flowering plants; supplements the high-sugar nectar diet with small insects and spiders … |
| 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
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.
Blue-tailed Emerald
Pure, flute-like descending scale; smooth melodic phrase moving cleanly through several notes, warm in timbre.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Blue-tailed Emerald
Widely distributed from Colombia and Venezuela through the Guianas to Trinidad and Tobago. Resident in varied lowland habitats.
保护状况
Anna's Hummingbird
Blue-tailed Emerald
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
Blue-tailed Emerald
White-throated Hummingbird: males with brilliant green gorget; metallic green above; white throat; females green above; 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.
Blue-tailed Emerald
蓝尾翠蜂鸟(Chlorostilbon mellisugus)是一种体长7-8厘米、广泛分布的小型蜂鸟，分布范围从哥伦比亚、委内瑞拉经圭亚那延伸至特立尼达。雄鸟背部翠绿色，尾羽蓝色。以花蜜为食，常见于开阔林地和花园中。