Anna's Hummingbird vs Brown Violetear
Calypte anna 对比 Colibri delphinae
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Brown Violetear |
|---|---|---|
| 学名 | Calypte anna | Colibri delphinae |
| 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) | 13.6 cm (5.4 in) |
| 体重 | 4.3 g (0.15 oz) | 6.2 g (0.22 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore visiting a wide range of forest-edge and garden flowers. Aggressively defends patches of Salvia … |
| 产卵数 | 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.
Brown Violetear
High, thin twittering barely audible; delicate cascade of minute notes almost imperceptible in dense vegetation.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Brown Violetear
Found in humid forest from Guatemala south through Central America to western Ecuador and Bolivia, and across northern South America. 0–1,800 m.
保护状况
Anna's Hummingbird
Brown 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
Brown Violetear
Long-tailed Sylph: males with spectacularly long violet-streaked iridescent tail; glittering green gorget; females with shorter graduated tail
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.
Brown Violetear
褐紫耳蜂鸟(Colibri delphinae)是一种体长11-12厘米的中型蜂鸟，具有暗褐色羽毛，这在蜂鸟中较为罕见。分布于从危地马拉到玻利维亚和巴西的湿润森林。以花蜜为食，是蜂鸟中外形最为朴素的种类之一。