Slender-tailed Woodstar vs Rufous-booted Racket-tail
Microstilbon burmeisteri 比較対象 Ocreatus addae
Side-by-Side Comparison
| 属性 | Slender-tailed Woodstar | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Microstilbon burmeisteri | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Not Evaluated |
| 体長 | — | — |
| 翼開長 | 6.0 cm (2.4 in) | — |
| 体重 | 2.09 g (0.07 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore of montane scrub, probing small tubular flowers. Catches spiders and minute flies to supply … | 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
Slender-tailed Woodstar
Soft, liquid descending cascade; gentle mellow notes flowing downward in quiet musical sequence at dawn.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Slender-tailed Woodstar
Found in arid scrub and woodland of central Bolivia and northwestern Argentina at 1,000-3,000 m. Resident and partial migrant.
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
Slender-tailed Woodstar
Rufous-booted Racket-tail
About These Birds
Slender-tailed Woodstar
アルゼンチンとボリビアの低木林や森林縁部に生息するシャムショールドハミングバード。体長7〜8cm。雄の輝く緑と赤紫色の羽毛が特徴的な小型ハチドリ。花の蜜を主食とする。低危険種。
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.