Violet-tailed Sylph vs Rufous-booted Racket-tail
Aglaiocercus coelestis 비교 대상 Ocreatus addae
Side-by-Side Comparison
| 속성 | Violet-tailed Sylph | Rufous-booted Racket-tail |
|---|---|---|
| 학명 | Aglaiocercus coelestis | Ocreatus addae |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Trochilidae | Trochilidae |
| 보전 상태 | Least Concern | Not Evaluated |
| 체장 | — | — |
| 날개 폭 | 12.4 cm (4.9 in) | — |
| 체중 | 5.483333333333334 g (0.19 oz) | 3.0 g (0.11 oz) |
| 식성 | Nectarivore with elongated tail foraging at diverse montane flowers. Catches small arthropods near flowering bromeliads. | 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
Violet-tailed Sylph
Sharp, emphatic two-note call; first note high and accented, second softer and brief, delivered at measured pace.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Violet-tailed Sylph
Found on the western Andean slope and Pacific foothills of Colombia and Ecuador in humid forest. 300–1,600 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
Violet-tailed Sylph
Rufous-booted Racket-tail
How to Tell Them Apart
Violet-tailed Sylph
Allen's Hummingbird: males with brilliant copper-orange back; glittering red-orange gorget; green crown; females green above with rufous
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
Violet-tailed Sylph
콜롬비아 서부 안데스의 서쪽 사면에 고유하게 서식하는 화려한 벌새(몸 10cm + 수컷 꼬리 13cm). 수컷은 연하늘색-보라색 꼬리가 특징이다. 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.