White-chested Emerald vs Rufous-booted Racket-tail
Chrysuronia brevirostris 对比 Ocreatus addae
Side-by-Side Comparison
| 属性 | White-chested Emerald | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Chrysuronia brevirostris | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Not Evaluated |
| 体长 | — | — |
| 翼展 | — | — |
| 体重 | 4.25 g (0.15 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore specialising in tubular blossoms; supplements the floral nectar diet with tiny insects and spiders … | 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
White-chested Emerald
Thin, reedy whistle with plaintive nasal quality; soft tone held briefly then gently fading in rain forest.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
White-chested Emerald
Found in humid forests from the Guianas through northern Amazonia to eastern Venezuela. Resident in lowland forest.
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
White-chested Emerald
Rufous-booted Racket-tail
How to Tell Them Apart
White-chested Emerald
Reunion Coucal: dark glossy black above; rufous wings; pale below; long dark tail; red eye; island endemic; similar to related species
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
White-chested Emerald
白胸翠蜂鸟(Chrysuronia brevirostris)是一种体长9-10厘米的中型蜂鸟，分布于从圭亚那经亚马逊北部到委内瑞拉东部的湿润森林。雄鸟具有闪亮的绿色上体和白色胸部。以花蜜为食，栖息于热带低地森林中。
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.