Anna's Hummingbird vs Purple-collared Woodstar
Calypte anna 比較対象 Myrtis fanny
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Purple-collared Woodstar |
|---|---|---|
| 学名 | Calypte anna | Myrtis fanny |
| 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) | 7.9 cm (3.1 in) |
| 体重 | 4.3 g (0.15 oz) | 2.4 g (0.08 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of Andean foothills and inter-valley scrub; visits small tubular flowers. Supplements with tiny arthropods. |
| 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.
Purple-collared Woodstar
Harsh, grating buzz with mechanical quality; abrupt dry trill issued suddenly then stopping in sharp silence.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Purple-collared Woodstar
Found in open habitats, gardens, and scrub from southern Ecuador south through Peru to northwestern Chile. Sea level to 3,000 m.
保全状況
Anna's Hummingbird
Purple-collared 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
Purple-collared Woodstar
White-tailed Sabrewing: males iridescent blue gorget; metallic green; white outer tail; 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.
Purple-collared Woodstar
A tiny hummingbird (8-9 cm) found in arid western Peru and southwestern Ecuador at sea level to 2,500 m. Males have a purple collar. Nectarivore of desert scrub, gardens, and river valleys. Adapted to extremely arid coastal environments.