Anna's Hummingbird vs Swallow-tailed Hummingbird
Calypte anna 对比 Eupetomena macroura
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Swallow-tailed Hummingbird |
|---|---|---|
| 学名 | Calypte anna | Eupetomena macroura |
| 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) | 13.9 cm (5.5 in) |
| 体重 | 4.3 g (0.15 oz) | 7.94 g (0.28 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Large, conspicuous nectarivore of Brazilian cerrado and gardens. Feeds at Erythrina and diverse blossoms; supplements … |
| 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.
Swallow-tailed Hummingbird
High, crystalline twittering with silvery sheen; rapid light notes cascading brightly in animated display.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Swallow-tailed Hummingbird
Found in open habitats across eastern South America from the Guianas to Argentina. Resident in cerrado and gardens.
保护状况
Anna's Hummingbird
Swallow-tailed 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
Swallow-tailed Hummingbird
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.
Swallow-tailed Hummingbird
燕尾蜂鸟，体长15-17厘米。虹彩蓝绿色，尾羽深度分叉。分布于南美洲东部。