Swallow-tailed Hummingbird vs Rufous-booted Racket-tail
Eupetomena macroura 对比 Ocreatus addae
Side-by-Side Comparison
| 属性 | Swallow-tailed Hummingbird | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Eupetomena macroura | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Not Evaluated |
| 体长 | — | — |
| 翼展 | 13.9 cm (5.5 in) | — |
| 体重 | 7.94 g (0.28 oz) | 3.0 g (0.11 oz) |
| 食性 | Large, conspicuous nectarivore of Brazilian cerrado and gardens. Feeds at Erythrina and diverse blossoms; supplements … | 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
Swallow-tailed Hummingbird
High, crystalline twittering with silvery sheen; rapid light notes cascading brightly in animated display.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Swallow-tailed Hummingbird
Found in open habitats across eastern South America from the Guianas to Argentina. Resident in cerrado and gardens.
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
Swallow-tailed Hummingbird
Rufous-booted Racket-tail
About These Birds
Swallow-tailed Hummingbird
燕尾蜂鸟，体长15-17厘米。虹彩蓝绿色，尾羽深度分叉。分布于南美洲东部。
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.