Anna's Hummingbird vs Garden Emerald
Calypte anna 对比 Chlorostilbon assimilis
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Garden Emerald |
|---|---|---|
| 学名 | Calypte anna | Chlorostilbon assimilis |
| 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) | 3.55 g (0.13 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Feeds on floral nectar in lowland Panama gardens and woodland. Catches 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.
Garden Emerald
Thin, sibilant buzz with wavering quality; soft high trill with gentle tremolo effect during hover 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.
Garden Emerald
Found in humid lowlands from Costa Rica to northern Colombia on the Pacific slope. Resident in gardens and second growth.
保护状况
Anna's Hummingbird
Garden 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
Garden Emerald
Plain-bellied Emerald: males with brilliant violet gorget; metallic green above; plain whitish belly; females green above; spotted
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.
Garden Emerald
花园翠蜂鸟(Chlorostilbon assimilis)是一种体长8-9厘米的小型蜂鸟，分布于从哥斯达黎加到哥伦比亚北部的湿润低地。雄鸟通体覆盖鲜亮的翠绿色羽毛，以花蜜为食，栖息于热带低地森林和花园中。