Sapphire-spangled Emerald vs Rufous-booted Racket-tail
Chionomesa lactea 对比 Ocreatus addae
Side-by-Side Comparison
| 属性 | Sapphire-spangled Emerald | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Chionomesa lactea | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Not Evaluated |
| 体长 | — | — |
| 翼展 | — | — |
| 体重 | 4.333333333333333 g (0.15 oz) | 3.0 g (0.11 oz) |
| 食性 | Feeds on floral nectar in forest understory, hovering at Heliconia and bromeliads. Supplements with 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
Sapphire-spangled Emerald
Soft, liquid notes in gentle descending sequence; mellow flowing tones with subtle variation characteristic of species.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Sapphire-spangled Emerald
Found in eastern and southern Brazil and northeastern Argentina. Resident in Atlantic Forest edges and cerrado.
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
Sapphire-spangled Emerald
Rufous-booted Racket-tail
About These Birds
Sapphire-spangled Emerald
乳白腹蜂鸟 (Chionomesa lactea)，体长约12厘米。上体金属绿色，下体乳白色，嘴直而略长。分布于南美洲中东部，包括巴西中部和阿根廷。以花蜜为主食。常在林缘和花园中活动。
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.