Black Jacobin vs Amethyst-throated Mountain-gem
Florisuga fusca 比較対象 Lampornis amethystinus
Side-by-Side Comparison
| 属性 | Black Jacobin | Amethyst-throated Mountain-gem |
|---|---|---|
| 学名 | Florisuga fusca | Lampornis amethystinus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 15.2 cm (6.0 in) | 13.1 cm (5.2 in) |
| 体重 | 8.0 g (0.28 oz) | 5.6000000000000005 g (0.20 oz) |
| 食性 | Nectarivore trap-lining low-forest flowers; catches small insects and spiders gleaned from leaf surfaces. | 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
Black Jacobin
Melodic, flute-like series descending smoothly; rich sustained notes with slight vibrato, beautiful and clear in calm air.
Amethyst-throated Mountain-gem
Pure, sustained flute-like tone held steady; single clear note with barely perceptible vibrato in tropical shade.
Geographic Range & Migration
Black Jacobin
Endemic to eastern Brazil in the Atlantic Forest from Bahia south to Rio Grande do Sul. Resident in Atlantic forest and adjacent open areas.
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
Black Jacobin
Amethyst-throated Mountain-gem
How to Tell Them Apart
Black Jacobin
Males entirely blackish with a glossy blue-violet sheen; white tips to undertail coverts; white tail corners; female similar but duller with white-spotted underparts; Atlantic forest hummingbird with unusual all-dark plumage …
Amethyst-throated Mountain-gem
Bumblebee Hummingbird: tiny; males with brilliant violet gorget; metallic green above; white underparts; females green above; spotted
About These Birds
Black Jacobin
ブラジルの大西洋岸森林に生息するハチドリで、ほぼ黒色の羽毛を持ち、ブロメリアの花に特化している。
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.