Venezuelan Sylph vs Rufous-booted Racket-tail
Aglaiocercus berlepschi 比較対象 Ocreatus addae
Side-by-Side Comparison
| 属性 | Venezuelan Sylph | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Aglaiocercus berlepschi | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Vulnerable | Not Evaluated |
| 体長 | — | — |
| 翼開長 | 11.9 cm (4.7 in) | — |
| 体重 | 5.0 g (0.18 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore of Venezuelan Andes cloud forest; visits Ericaceae and Fuchsia blooms. Takes small insects and … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| 一腹卵数 | -- | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Venezuelan Sylph
Rough, buzzy chatter with energetic rhythm; coarse notes delivered rapidly with distinctive raw texture near nest.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Venezuelan Sylph
Endemic to the coastal mountains of north-central Venezuela in cloud forest. 1,200–2,400 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
Venezuelan Sylph
Rufous-booted Racket-tail
How to Tell Them Apart
Venezuelan Sylph
Bahama Woodstar: tiny; males with glittering magenta gorget; metallic green above; white underparts; females green above; spotted below
Rufous-booted Racket-tail
Golden-bellied Starfrontlet: tiny; males with brilliant orange-gold belly; violet gorget; females green above; spotted buff below
About These Birds
Venezuelan Sylph
A spectacular hummingbird closely related to Long-tailed Sylph, endemic to the coastal mountains of northern Venezuela. Males have long violet-blue tail streamers. Nectarivore of cloud forest. Sometimes considered a subspecies of Long-tailed Sylph. Very limited range.
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.