Anna's Hummingbird vs Chilean Woodstar
Calypte anna 对比 Eulidia yarrellii
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Chilean Woodstar |
|---|---|---|
| 学名 | Calypte anna | Eulidia yarrellii |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Critically Endangered |
| 体长 | 10.0 cm (3.9 in) | — |
| 翼展 | 12.0 cm (4.7 in) | 6.6 cm (2.6 in) |
| 体重 | 4.3 g (0.15 oz) | 2.38 g (0.08 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectar specialist of arid Atacama valleys, visiting cacti and Nicotiana. Supplements diet with small insects … |
| 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.
Chilean Woodstar
Buzzy, high-pitched trill with insect-like quality; sustained rapid vibration with minimal melodic content.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Chilean Woodstar
Endemic to the hyper-arid coast of northern Chile from Arica to Antofagasta. Critically Endangered with fewer than 400 individuals.
保护状况
Anna's Hummingbird
Chilean Woodstar
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
Chilean Woodstar
Slender Sheartail: males with glittering violet gorget; metallic green above; elongated outer tail; 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.
Chilean Woodstar
智利木星蜂鸟，体长7-8厘米。喉部紫色，尾羽分叉。智利极干旱阿塔卡马海岸特有种。极危，个体数不足400只。