White-throated Mountain-gem vs Rufous-booted Racket-tail
Lampornis castaneoventris 比較対象 Ocreatus addae
Side-by-Side Comparison
| 属性 | White-throated Mountain-gem | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Lampornis castaneoventris | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Not Evaluated |
| 体長 | — | — |
| 翼開長 | 12.2 cm (4.8 in) | — |
| 体重 | 5.58 g (0.20 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore of Costa Rican highlands; visits diverse cloud-forest flowers. Supplements diet with small insects and … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| 一腹卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-throated Mountain-gem
Thin, reedy trill with wavering quality; soft rapid notes with gentle tremolo effect given from cover.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
White-throated Mountain-gem
Endemic to the highlands of Costa Rica and western Panama in cloud forest. 1,200–2,800 m. Resident.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
保全状況
White-throated Mountain-gem
Rufous-booted Racket-tail
About These Birds
White-throated Mountain-gem
A medium-sized hummingbird (10-11 cm) endemic to the highlands of Costa Rica and western Panama at 1,000-2,500 m. Males have a white throat and chestnut belly. Nectarivore of cloud forest and forest edges. A Talamanca-Chiriquí endemic.
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.