Anna's Hummingbird vs Chilean Woodstar
Calypte anna 比較対象 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 |
| 保全状況 | Least Concern | Critically Endangered |
| 体長 | 10.0 cm (3.9 in) | — |
| 翼開長 | 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 … |
| 一腹卵数 | 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.
保全状況
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
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
チリのアタカマ砂漠に生息するハチドリで、個体数400羽未満の絶滅危惧種IA類に指定されている。