Long-tailed Sylph vs Amethyst-throated Mountain-gem
Aglaiocercus kingii 对比 Lampornis amethystinus
Side-by-Side Comparison
| 属性 | Long-tailed Sylph | Amethyst-throated Mountain-gem |
|---|---|---|
| 学名 | Aglaiocercus kingii | Lampornis amethystinus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 11.7 cm (4.6 in) | 13.1 cm (5.2 in) |
| 体重 | 5.25 g (0.19 oz) | 5.6000000000000005 g (0.20 oz) |
| 食性 | Nectarivore of Andean cloud forest; forages at Ericaceae and epiphyte blooms. Supplements diet with small … | Nectarivore of Mexican and Central American montane pine-oak forest; visits Ericaceae and Salvia. Gleans arthropods. |
| 产卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Long-tailed Sylph
Melodic, flowing phrase with rich character; warm notes weaving in relaxed sequence typical of dawn chorus activity.
Amethyst-throated Mountain-gem
Pure, sustained flute-like tone held steady; single clear note with barely perceptible vibrato in tropical shade.
Geographic Range & Migration
Long-tailed Sylph
Widespread in Andean cloud forests from Venezuela south through Colombia, Ecuador, Peru, and Bolivia. 1,000–2,800 m.
Amethyst-throated Mountain-gem
Found in montane forest from Mexico south through Guatemala and Honduras to El Salvador. 1,000–3,200 m.
保护状况
Long-tailed Sylph
Amethyst-throated Mountain-gem
How to Tell Them Apart
Long-tailed Sylph
Rufous Hummingbird: males with brilliant orange-rufous body; iridescent red gorget; females green above; rufous-washed below
Amethyst-throated Mountain-gem
Bumblebee Hummingbird: tiny; males with brilliant violet gorget; metallic green above; white underparts; females green above; spotted
About These Birds
Long-tailed Sylph
长尾青蜂鸟（Aglaiocercus kingii），体长10厘米（雄鸟尾羽另加13厘米），分布于委内瑞拉至玻利维亚安第斯云雾林。属蜂鸟科（Trochilidae），雄鸟体羽闪烁蓝绿色，长尾羽为求偶展示的重要道具。
Amethyst-throated Mountain-gem
A medium-sized hummingbird (11-12 cm) found in mountain forests from Mexico to Honduras at 1,000-3,000 m. Males have an amethyst-purple throat. Nectarivore of pine-oak and cloud forest. Commonly visits feeders in Mexican highland gardens.