Anna's Hummingbird vs Slender Sheartail
Calypte anna 比較対象 Doricha enicura
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Slender Sheartail |
|---|---|---|
| 学名 | Calypte anna | Doricha enicura |
| 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) | 7.3 cm (2.9 in) |
| 体重 | 4.3 g (0.15 oz) | 2.4333333333333336 g (0.09 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Feeds on floral nectar from forest-edge blossoms, probing with its long decurved bill. Catches 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.
Slender Sheartail
Thin, wavering sibilant trill; soft high buzzing with slight pulsing quality during courtship hover display.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Slender Sheartail
Endemic to the highlands of Guatemala, Honduras, and El Salvador at 1,200-2,500 m. Resident in montane scrub and forest edges.
保全状況
Anna's Hummingbird
Slender Sheartail
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
Slender Sheartail
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.
Slender Sheartail
A tiny hummingbird (9-10 cm including elongated tail in males) endemic to the highlands of Guatemala, Honduras, and El Salvador at 1,200-2,500 m. Males have extremely long, slender outer tail feathers. Nectarivore of montane scrub and garden flowers.