Blue-tailed Emerald vs Rufous-booted Racket-tail
Chlorostilbon mellisugus 比較対象 Ocreatus addae
Side-by-Side Comparison
| 属性 | Blue-tailed Emerald | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Chlorostilbon mellisugus | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Not Evaluated |
| 体長 | — | — |
| 翼開長 | 9.0 cm (3.5 in) | — |
| 体重 | 2.6466666666666665 g (0.09 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore visiting diverse flowering plants; supplements the high-sugar nectar diet with small insects and spiders … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| 一腹卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Blue-tailed Emerald
Pure, flute-like descending scale; smooth melodic phrase moving cleanly through several notes, warm in timbre.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Blue-tailed Emerald
Widely distributed from Colombia and Venezuela through the Guianas to Trinidad and Tobago. Resident in varied lowland habitats.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
保全状況
Blue-tailed Emerald
Rufous-booted Racket-tail
How to Tell Them Apart
Blue-tailed Emerald
White-throated Hummingbird: males with brilliant green gorget; metallic green above; white throat; females green above; spotted below
Rufous-booted Racket-tail
Golden-bellied Starfrontlet: tiny; males with brilliant orange-gold belly; violet gorget; females green above; spotted buff below
About These Birds
Blue-tailed Emerald
ブルーテールエメラルドハチドリ(Chlorostilbon mellisugus)はコロンビアからガイアナにかけての北部南アメリカに分布するハチドリです。オスは青みがかった尾羽が特徴的で、体はエメラルドグリーンです。乾燥した低木地帯や草原縁部を好みます。
Rufous-booted Racket-tail
A small hummingbird (8-10 cm plus tail rackets) found in Andean cloud forests of southeastern Peru and Bolivia at 1,200-2,200 m. Males have rufous leg puffs instead of white. Recently split from Booted Racket-tail. Nectarivore of montane forest undergrowth.