Long-tailed Sylph vs Rufous-booted Racket-tail
Aglaiocercus kingii 비교 대상 Ocreatus addae
Side-by-Side Comparison
| 속성 | Long-tailed Sylph | Rufous-booted Racket-tail |
|---|---|---|
| 학명 | Aglaiocercus kingii | Ocreatus addae |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Trochilidae | Trochilidae |
| 보전 상태 | Least Concern | Not Evaluated |
| 체장 | — | — |
| 날개 폭 | 11.7 cm (4.6 in) | — |
| 체중 | 5.25 g (0.19 oz) | 3.0 g (0.11 oz) |
| 식성 | Nectarivore of Andean cloud forest; forages at Ericaceae and epiphyte blooms. Supplements diet with small … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| 산란 수 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Long-tailed Sylph
Melodic, flowing phrase with rich character; warm notes weaving in relaxed sequence typical of dawn chorus activity.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Long-tailed Sylph
Widespread in Andean cloud forests from Venezuela south through Colombia, Ecuador, Peru, and Bolivia. 1,000–2,800 m.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
보전 상태
Long-tailed Sylph
Rufous-booted Racket-tail
How to Tell Them Apart
Long-tailed Sylph
Rufous Hummingbird: males with brilliant orange-rufous body; iridescent red gorget; females green above; rufous-washed 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
Long-tailed Sylph
베네수엘라에서 볼리비아까지 안데스 운무림에 서식하는 화려한 벌새(몸 10cm + 수컷 꼬리 13cm). 수컷은 파란-녹색 긴 이마 다색 꼬리와 빛나는 에메랄드 목을 가진다. 꽃의 꿀과 작은 곤충을 먹는다.
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.