Bronze-tailed Thornbill vs Amethyst-throated Mountain-gem
Chalcostigma heteropogon 比較対象 Lampornis amethystinus
Side-by-Side Comparison
| 属性 | Bronze-tailed Thornbill | Amethyst-throated Mountain-gem |
|---|---|---|
| 学名 | Chalcostigma heteropogon | Lampornis amethystinus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 14.1 cm (5.6 in) | 13.1 cm (5.2 in) |
| 体重 | 5.65 g (0.20 oz) | 5.6000000000000005 g (0.20 oz) |
| 食性 | Nectarivore of high Andean grasslands and shrublands; visits Ericaceae and Gentianaceae blooms. Gleans 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
Bronze-tailed Thornbill
Deep, hollow churring with resonant bass; prolonged low buzzing audible at range through open forest edge.
Amethyst-throated Mountain-gem
Pure, sustained flute-like tone held steady; single clear note with barely perceptible vibrato in tropical shade.
Geographic Range & Migration
Bronze-tailed Thornbill
Found in high Andean grassland and scrub from Venezuela through Colombia to Ecuador at 2,800–4,200 m.
Amethyst-throated Mountain-gem
Found in montane forest from Mexico south through Guatemala and Honduras to El Salvador. 1,000–3,200 m.
保全状況
Bronze-tailed Thornbill
Amethyst-throated Mountain-gem
How to Tell Them Apart
Bronze-tailed Thornbill
Mangrove Hummingbird: tiny; males with violet gorget; metallic green above; white-spotted underparts; females green above; spotted
Amethyst-throated Mountain-gem
Bumblebee Hummingbird: tiny; males with brilliant violet gorget; metallic green above; white underparts; females green above; spotted
About These Birds
Bronze-tailed Thornbill
ベネズエラからペルーのアンデス雲霧林・パラモ縁（2,500〜3,800 m）の小型ハチドリ（10〜11 cm）。緑色の羽衣に銅色の尾と紫色の喉（雄）。高高度の花蜜食性。
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.