Rufous-booted Racket-tail vs Blue-vented Hummingbird
Ocreatus addae 比較対象 Saucerottia hoffmanni
Side-by-Side Comparison
| 属性 | Rufous-booted Racket-tail | Blue-vented Hummingbird |
|---|---|---|
| 学名 | Ocreatus addae | Saucerottia hoffmanni |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Not Evaluated | Not Evaluated |
| 体長 | — | — |
| 翼開長 | — | — |
| 体重 | 3.0 g (0.11 oz) | 4.85 g (0.17 oz) |
| 食性 | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Feeds on nectar from Costa Rican lowland forest flowers and gardens. Supplements diet with small … |
| 一腹卵数 | 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.
Blue-vented Hummingbird
Harsh, nasal chatter with emphatic delivery; rough buzzy notes delivered rapidly with coarse texture.
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.
Blue-vented Hummingbird
Found in dry to semi-humid habitats from Honduras to Costa Rica. Resident in gardens and forest edges.
保全状況
Rufous-booted Racket-tail
Blue-vented Hummingbird
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.
Blue-vented Hummingbird
A medium-sized hummingbird (10-11 cm) found in dry to semi-humid habitats from Honduras to Costa Rica. Green plumage with blue vent. Nectarivore of gardens, scrub, and forest edges. Named after the German naturalist Karl Hoffmann. A Central American near-endemic.