Anna's Hummingbird vs Rufous-throated Hummingbird
Calypte anna 比較対象 Hylocharis sapphirina
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Rufous-throated Hummingbird |
|---|---|---|
| 学名 | Calypte anna | Hylocharis sapphirina |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Least Concern |
| 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) | 4.239999999999999 g (0.15 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore visiting diverse flowering plants; supplements the high-sugar nectar diet with small insects and spiders … |
| 一腹卵数 | 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.
Rufous-throated Hummingbird
Sharp, piercing screech with urgent character; sudden loud rough call given during aerial territorial chase.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Rufous-throated Hummingbird
Found in humid lowland forests from Colombia through Amazonia to Bolivia and Brazil. Resident in forest edges.
保全状況
Anna's Hummingbird
Rufous-throated 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
Rufous-throated Hummingbird
Violet Coucal: brilliant violet-blue iridescent body; rufous wings; dark graduated tail; red eye; violet iridescence distinctive
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.
Rufous-throated Hummingbird
A small hummingbird (8-9 cm) found in humid lowland forests from Colombia through Amazonia to Bolivia and Brazil. Males have a rufous-red throat. Green plumage. Nectarivore of forest edges and river-edge habitats. Often confused with the similar Gilded Hummingbird.