Anna's Hummingbird vs Western Emerald
Calypte anna 比較対象 Chlorostilbon melanorhynchus
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Western Emerald |
|---|---|---|
| 学名 | Calypte anna | Chlorostilbon melanorhynchus |
| 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) | 2.675 g (0.09 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of western Colombian and Ecuadorian forest. Supplements diet with small arthropods caught near blossoms. |
| 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.
Western Emerald
Melodic, ascending phrase with hopeful character; smooth pure tones rising in clear musical progression at dawn.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Western Emerald
Found from Panama to Peru along the western Andean foothills. Resident in forest edges and gardens at low to mid elevations.
保全状況
Anna's Hummingbird
Western Emerald
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
Western Emerald
White-chested Emerald: males with iridescent green gorget; metallic green above; white chest; females green above; spotted white 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.
Western Emerald
A small hummingbird (8-9 cm) found from Panama to Peru in western Andean foothills. Bright emerald-green plumage with dark tail. Nectarivore of forest edges and gardens. Closely related to other Chlorostilbon emeralds. A Chocó and western Andean species.