Anna's Hummingbird vs Blue-vented Hummingbird
Calypte anna 比較対象 Saucerottia hoffmanni
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Blue-vented Hummingbird |
|---|---|---|
| 学名 | Calypte anna | Saucerottia hoffmanni |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Not Evaluated |
| 体長 | 10.0 cm (3.9 in) | — |
| 翼開長 | 12.0 cm (4.7 in) | — |
| 体重 | 4.3 g (0.15 oz) | 4.85 g (0.17 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Feeds on nectar from Costa Rican lowland forest flowers and gardens. Supplements diet with small … |
| 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.
Blue-vented Hummingbird
Harsh, nasal chatter with emphatic delivery; rough buzzy notes delivered rapidly with coarse texture.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Blue-vented Hummingbird
Found in dry to semi-humid habitats from Honduras to Costa Rica. Resident in gardens and forest edges.
保全状況
Anna's Hummingbird
Blue-vented 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
Blue-vented Hummingbird
Sunda Coucal: dark glossy brown above; rufous wings; pale buff below; long graduated dark tail; red eye; forest dweller
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.
Blue-vented Hummingbird
A medium-sized hummingbird (10-11 cm) found in dry to semi-humid habitats from Honduras to Costa Rica. Green plumage with blue vent. Nectarivore of gardens, scrub, and forest edges. Named after the German naturalist Karl Hoffmann. A Central American near-endemic.