Anna's Hummingbird vs Green Violetear
Calypte anna 对比 Colibri thalassinus
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Green Violetear |
|---|---|---|
| 学名 | Calypte anna | Colibri thalassinus |
| 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) | 12.5 cm (4.9 in) |
| 体重 | 4.3 g (0.15 oz) | 5.092499999999999 g (0.18 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of montane gardens and cloud-forest borders. Takes small insects in aerial sallies from prominent … |
| 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.
Green Violetear
Melodic, descending four-note phrase; clear flute-like tones stepping down smoothly, characteristic of violetear territory song.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Green Violetear
Found in highlands from central Mexico south through Central America to western Bolivia. Common in montane forest at 1,000–3,000 m.
保护状况
Anna's Hummingbird
Green Violetear
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
Green Violetear
Short-tailed Emerald: iridescent green above with coppery rump; white underparts; rufous flanks; sexually dimorphic; straight short bill
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.
Green Violetear
绿紫耳蜂鸟(Colibri thalassinus)是一种体长10-12厘米的中型蜂鸟，具有亮丽绿色羽毛和虹彩蓝紫色耳斑。分布于从墨西哥到玻利维亚的高海拔地带，是北美洲最常见的迷鸟蜂鸟之一。以花蜜为食。