Venezuelan Sylph vs Anna's Hummingbird
Aglaiocercus berlepschi 比較対象 Calypte anna
Side-by-Side Comparison
| 属性 | Venezuelan Sylph | Anna's Hummingbird |
|---|---|---|
| 学名 | Aglaiocercus berlepschi | Calypte anna |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | 10.0 cm (3.9 in) |
| 翼開長 | 11.9 cm (4.7 in) | 12.0 cm (4.7 in) |
| 体重 | 5.0 g (0.18 oz) | 4.3 g (0.15 oz) |
| 食性 | Nectarivore of Venezuelan Andes cloud forest; visits Ericaceae and Fuchsia blooms. Takes small insects and … | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … |
| 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
Venezuelan Sylph
Rough, buzzy chatter with energetic rhythm; coarse notes delivered rapidly with distinctive raw texture near nest.
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.
Geographic Range & Migration
Venezuelan Sylph
Endemic to the coastal mountains of north-central Venezuela in cloud forest. 1,200–2,400 m. Resident.
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
保全状況
Venezuelan Sylph
Anna's Hummingbird
How to Tell Them Apart
Venezuelan Sylph
Bahama Woodstar: tiny; males with glittering magenta gorget; metallic green above; white underparts; females green above; spotted below
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
About These Birds
Venezuelan Sylph
A spectacular hummingbird closely related to Long-tailed Sylph, endemic to the coastal mountains of northern Venezuela. Males have long violet-blue tail streamers. Nectarivore of cloud forest. Sometimes considered a subspecies of Long-tailed Sylph. Very limited range.
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.