Rufous-capped Thornbill vs Amethyst-throated Mountain-gem
Chalcostigma ruficeps 比較対象 Lampornis amethystinus
Side-by-Side Comparison
| 属性 | Rufous-capped Thornbill | Amethyst-throated Mountain-gem |
|---|---|---|
| 学名 | Chalcostigma ruficeps | Lampornis amethystinus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 11.6 cm (4.6 in) | 13.1 cm (5.2 in) |
| 体重 | 3.6666666666666665 g (0.13 oz) | 5.6000000000000005 g (0.20 oz) |
| 食性 | Nectarivore of Peruvian and Bolivian puna; forages at Chuquiraga and low shrubs. Catches tiny arthropods. | Nectarivore of Mexican and Central American montane pine-oak forest; visits Ericaceae and Salvia. Gleans arthropods. |
| 一腹卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Rufous-capped Thornbill
Melodic, descending phrase with warm timbre; clear notes stepping down smoothly in relaxed musical progression.
Amethyst-throated Mountain-gem
Pure, sustained flute-like tone held steady; single clear note with barely perceptible vibrato in tropical shade.
Geographic Range & Migration
Rufous-capped Thornbill
Found on the eastern Andean slope from Ecuador south to Bolivia in lower montane forest. 1,200–2,600 m elevation.
Amethyst-throated Mountain-gem
Found in montane forest from Mexico south through Guatemala and Honduras to El Salvador. 1,000–3,200 m.
保全状況
Rufous-capped Thornbill
Amethyst-throated Mountain-gem
How to Tell Them Apart
Rufous-capped Thornbill
Purple-crowned Plovercrest: males with glittering violet crown; metallic green above; white underparts; females green with spotted 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
Rufous-capped Thornbill
エクアドルからボリビアのアンデス雲霧林・パラモ（2,500〜4,000 m）の小型ハチドリ（10〜11 cm）。赤褐色の頭頂と緑色の羽衣。高高度の低木やプヤ・ブロメリアで花蜜を吸う。
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.