Rainbow-bearded Thornbill vs Amethyst-throated Mountain-gem
Chalcostigma herrani 比較対象 Lampornis amethystinus
Side-by-Side Comparison
| 属性 | Rainbow-bearded Thornbill | Amethyst-throated Mountain-gem |
|---|---|---|
| 学名 | Chalcostigma herrani | Lampornis amethystinus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 13.5 cm (5.3 in) | 13.1 cm (5.2 in) |
| 体重 | 6.183333333333334 g (0.22 oz) | 5.6000000000000005 g (0.20 oz) |
| 食性 | Nectarivore of Colombian and Venezuelan montane scrub; visits diverse small flowers. Supplements with small insects. | 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
Rainbow-bearded Thornbill
Thin, reedy trill with wavering quality; soft rapid notes with gentle tremolo effect, given from dense cover.
Amethyst-throated Mountain-gem
Pure, sustained flute-like tone held steady; single clear note with barely perceptible vibrato in tropical shade.
Geographic Range & Migration
Rainbow-bearded Thornbill
Found in high Andean páramo and shrubby forest edge from Colombia south to Ecuador and Peru. 2,600–4,400 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
Rainbow-bearded Thornbill
Amethyst-throated Mountain-gem
How to Tell Them Apart
Rainbow-bearded Thornbill
Snowcap: males with brilliant iridescent blue-violet gorget; snow-white crown; metallic green above; females green above; 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
Rainbow-bearded Thornbill
コロンビアからエクアドルのアンデスのパラモ（2,800〜4,000 m）に生息する小型ハチドリ（10〜11 cm）。雄は緑から金を経て紫まで変化する虹色の髭状羽毛を持つ。高山の花蜜食性。
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.