Rufous-booted Racket-tail vs Red-billed Streamertail
Ocreatus addae 比較対象 Trochilus polytmus
Side-by-Side Comparison
| 属性 | Rufous-booted Racket-tail | Red-billed Streamertail |
|---|---|---|
| 学名 | Ocreatus addae | Trochilus polytmus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Not Evaluated | Least Concern |
| 体長 | — | — |
| 翼開長 | — | 11.8 cm (4.6 in) |
| 体重 | 3.0 g (0.11 oz) | 4.9 g (0.17 oz) |
| 食性 | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Visits flowering trees and epiphytes for nectar; supplements diet with small arthropods including gnats, midges, … |
| 一腹卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Red-billed Streamertail
Sharp, emphatic two-note call; high accented first note followed by lower brief second, clearly projected.
Geographic Range & Migration
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
Red-billed Streamertail
Endemic to Jamaica. National bird. Resident across the island in forests, gardens, and plantations at all elevations.
保全状況
Rufous-booted Racket-tail
Red-billed Streamertail
How to Tell Them Apart
Rufous-booted Racket-tail
Golden-bellied Starfrontlet: tiny; males with brilliant orange-gold belly; violet gorget; females green above; spotted buff below
Red-billed Streamertail
Goliath Coucal: large; dark glossy black-brown above; rufous wings; dark streaked below; red eye; massive size; long graduated tail
About These Birds
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.
Red-billed Streamertail
ロングテイルドジャマイカンハミングバードはジャマイカ固有のハチドリです。雄は極めて長い尾羽と緑の羽毛が特徴的です。