White-necked Jacobin vs Amethyst-throated Mountain-gem
Florisuga mellivora 比較対象 Lampornis amethystinus
Side-by-Side Comparison
| 属性 | White-necked Jacobin | Amethyst-throated Mountain-gem |
|---|---|---|
| 学名 | Florisuga mellivora | Lampornis amethystinus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 13.6 cm (5.4 in) | 13.1 cm (5.2 in) |
| 体重 | 7.666666666666667 g (0.27 oz) | 5.6000000000000005 g (0.20 oz) |
| 食性 | Nectar generalist visiting a wide range of forest flowers; also catches small arthropods by aerial … | Nectarivore of Mexican and Central American montane pine-oak forest; visits Ericaceae and Salvia. Gleans arthropods. |
| 一腹卵数 | 1-3 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-necked Jacobin
High, insect-like buzzing sustained for several seconds; thin monotone delivered continuously during hovering display flight.
Amethyst-throated Mountain-gem
Pure, sustained flute-like tone held steady; single clear note with barely perceptible vibrato in tropical shade.
Geographic Range & Migration
White-necked Jacobin
Found from Mexico south through Central America to Venezuela, Trinidad, and the western Amazon. Common in lowland forest edge and gardens.
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
White-necked Jacobin
Amethyst-throated Mountain-gem
How to Tell Them Apart
White-necked Jacobin
Males vivid blue head and throat; white nape and hindneck contrasting sharply with blue; white belly; green back; white tail with dark terminal band; females brown above, spotted below; bold …
Amethyst-throated Mountain-gem
Bumblebee Hummingbird: tiny; males with brilliant violet gorget; metallic green above; white underparts; females green above; spotted
About These Birds
White-necked Jacobin
メキシコからブラジルにかけて分布するハチドリで、白い胸部と青い頭巾が特徴。
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.