White-vented Violetear vs Rufous-booted Racket-tail
Colibri serrirostris 对比 Ocreatus addae
Side-by-Side Comparison
| 属性 | White-vented Violetear | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Colibri serrirostris | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Not Evaluated |
| 体长 | — | — |
| 翼展 | 13.6 cm (5.4 in) | — |
| 体重 | 6.199999999999999 g (0.22 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore of highland and lowland forest margins. Feeds on diverse tubular flowers and catches flying … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| 产卵数 | 1-2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-vented Violetear
Sharp, emphatic squeak repeated quickly; tiny piercing notes delivered insistently during competitive encounters near feeders.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
White-vented Violetear
Found in cerrado, chaco, and open woodland of central and southern Brazil, Bolivia, and Paraguay. 200–1,200 m elevation.
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-vented Violetear
Rufous-booted Racket-tail
About These Birds
White-vented Violetear
白臀紫耳蜂鸟(Colibri serrirostris)是一种体长11-12厘米的中型蜂鸟，具有绿色羽毛、紫色耳斑和独特的白色臀部。分布于巴西中部、玻利维亚东部和阿根廷北部的塞拉多草原。以花蜜为食。
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.