Rufous-booted Racket-tail vs Steely-vented Hummingbird
Ocreatus addae 비교 대상 Saucerottia saucerottei
Side-by-Side Comparison
| 속성 | Rufous-booted Racket-tail | Steely-vented Hummingbird |
|---|---|---|
| 학명 | Ocreatus addae | Saucerottia saucerottei |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Trochilidae | Trochilidae |
| 보전 상태 | Not Evaluated | Least Concern |
| 체장 | — | — |
| 날개 폭 | — | — |
| 체중 | 3.0 g (0.11 oz) | 4.45 g (0.16 oz) |
| 식성 | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Nectarivore of Colombian Caribbean lowlands, visiting diverse flowering trees. Supplements with insects and spiders. |
| 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.
Steely-vented Hummingbird
Thin, high-pitched twittering barely perceptible; delicate notes cascading gently near high-elevation flowers.
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.
Steely-vented Hummingbird
Found in varied habitats from Colombia to Venezuela. Resident in forest edges, gardens, and open country.
보전 상태
Rufous-booted Racket-tail
Steely-vented 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
Steely-vented Hummingbird
Greater Coucal: glossy blue-black head and underparts; rich chestnut wings; red eye; long graduated black tail; sexually similar
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.
Steely-vented Hummingbird
A medium-sized hummingbird (9-10 cm) found in varied habitats from Colombia to Venezuela. Green plumage with a steely-blue vent. Nectarivore of forest edges, gardens, and open country. One of the most common garden hummingbirds in northern South America.