Hyacinth Visorbearer vs Rufous-booted Racket-tail
Augastes scutatus 比較対象 Ocreatus addae
Side-by-Side Comparison
| 属性 | Hyacinth Visorbearer | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Augastes scutatus | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Not Evaluated |
| 体長 | — | — |
| 翼開長 | 10.7 cm (4.2 in) | — |
| 体重 | 3.3 g (0.12 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore of Brazilian cerrado flowers, particularly Vellozia and Qualea. Catches small insects near rocky outcrops. | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| 一腹卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Hyacinth Visorbearer
Soft, pure sustained tone with gentle vibrato; single melodic note trembling slightly, typical of quiet upland forest perches.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Hyacinth Visorbearer
Endemic to the campo rupestre of the Espinhaço Range in Minas Gerais, Brazil. Found at 900–1,600 m elevation.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
保全状況
Hyacinth Visorbearer
Rufous-booted Racket-tail
How to Tell Them Apart
Hyacinth Visorbearer
Velvet-purple Coronet: brilliant velvety purple head; glittering green gorget; iridescent purple body; white underparts; straight bill
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
Hyacinth Visorbearer
ブラジル南東部の高地、特にミナス・ジェライス州固有の小型ハチドリ（8〜9cm）。虹彩色のヒヤシンスブルーの前額バイザーと緑色の羽毛を持つ。疎らな植生の岩礁カンポ・ルペストレ生息地の蜜食者。準絶滅危惧に分類。
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.