Rufous-booted Racket-tail vs Oasis Hummingbird
Ocreatus addae 비교 대상 Rhodopis vesper
Side-by-Side Comparison
| 속성 | Rufous-booted Racket-tail | Oasis Hummingbird |
|---|---|---|
| 학명 | Ocreatus addae | Rhodopis vesper |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Trochilidae | Trochilidae |
| 보전 상태 | Not Evaluated | Least Concern |
| 체장 | — | — |
| 날개 폭 | — | 11.1 cm (4.4 in) |
| 체중 | 3.0 g (0.11 oz) | 4.08 g (0.14 oz) |
| 식성 | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Nectarivore of Peruvian coastal desert oases; visits Capparis, Tillandsia, and garden flowers. Supplements with small … |
| 산란 수 | 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.
Oasis Hummingbird
Soft, pure whistle with warm timbre; gentle sustained tone with slight fall at end, given quietly. Vocalization pattern typical of this species in its native habitat.
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.
Oasis Hummingbird
Found in coastal fog valleys and desert oases of Peru and northern Chile. Sea level to 3,200 m. Highly restricted lowland range.
보전 상태
Rufous-booted Racket-tail
Oasis Hummingbird
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
Oasis Hummingbird
Lazuline Sabrewing: tiny; males with brilliant lazuline blue gorget; metallic green above; white underparts; females plain green; spots
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.
Oasis Hummingbird
A small hummingbird (12-13 cm including long tail) found in the arid coastal deserts of Peru and northern Chile. Dull plumage with a long, forked tail. Nectarivore specializing in desert flowers and columnar cacti. One of the few hummingbirds adapted to hyper-arid environments.