Brown Violetear vs Rufous-booted Racket-tail
Colibri delphinae 对比 Ocreatus addae
Side-by-Side Comparison
| 属性 | Brown Violetear | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Colibri delphinae | 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 | 6.2 g (0.22 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore visiting a wide range of forest-edge and garden flowers. Aggressively defends patches of Salvia … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| 产卵数 | -- | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Brown Violetear
High, thin twittering barely audible; delicate cascade of minute notes almost imperceptible in dense vegetation.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Brown Violetear
Found in humid forest from Guatemala south through Central America to western Ecuador and Bolivia, and across northern South America. 0–1,800 m.
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
Brown Violetear
Rufous-booted Racket-tail
How to Tell Them Apart
Brown Violetear
Long-tailed Sylph: males with spectacularly long violet-streaked iridescent tail; glittering green gorget; females with shorter graduated tail
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
Brown Violetear
褐紫耳蜂鸟(Colibri delphinae)是一种体长11-12厘米的中型蜂鸟，具有暗褐色羽毛，这在蜂鸟中较为罕见。分布于从危地马拉到玻利维亚和巴西的湿润森林。以花蜜为食，是蜂鸟中外形最为朴素的种类之一。
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.