Green-tailed Emerald vs Rufous-booted Racket-tail
Chlorostilbon alice 对比 Ocreatus addae
Side-by-Side Comparison
| 属性 | Green-tailed Emerald | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Chlorostilbon alice | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Not Evaluated |
| 体长 | — | — |
| 翼展 | — | — |
| 体重 | 3.5 g (0.12 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore of Venezuelan dry scrub, hovering at low shrub blooms. Catches gnats and spiders to … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| 产卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Green-tailed Emerald
Buzzy, sustained trill with insect-like quality; continuous high-frequency vibration with rapid amplitude modulation.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Green-tailed Emerald
Found in montane regions of Venezuela at 500-2,000 m elevation. A Venezuelan endemic or near-endemic.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
保护状况
Green-tailed Emerald
Rufous-booted Racket-tail
How to Tell Them Apart
Green-tailed Emerald
Elliot's Hummingbird (Elliotomyia): males with iridescent violet gorget; metallic green above; white underparts; females green; spots
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
Green-tailed Emerald
委内瑞拉翠蜂鸟 (Chlorostilbon alice)，体长约9厘米。雄鸟体羽闪亮翠绿色，尾叉形深蓝色；雌鸟下体灰白色，有淡色眉纹。特有于委内瑞拉北部的山地灌丛和林缘。以花蜜为主食，也捕食小型昆虫。
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.