Velvet-purple Coronet vs Rufous-booted Racket-tail
Boissonneaua jardini 比較対象 Ocreatus addae
Side-by-Side Comparison
| 属性 | Velvet-purple Coronet | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Boissonneaua jardini | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Not Evaluated |
| 体長 | — | — |
| 翼開長 | 15.0 cm (5.9 in) | — |
| 体重 | 9.4 g (0.33 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore of Colombian Pacific slope cloud forest; visits Ericaceae and Heliconia. Supplements with small arthropods. | 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
Velvet-purple Coronet
Harsh, grating screech with urgent tone; sudden loud rough call given sharply during aerial chase encounter.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Velvet-purple Coronet
Found on the Pacific slope of the Andes in Colombia and northwestern Ecuador in cloud forest. 500–1,800 m.
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
Velvet-purple Coronet
Rufous-booted Racket-tail
How to Tell Them Apart
Velvet-purple Coronet
Rainbow Starfrontlet: males with brilliant magenta-orange gorget; metallic green above; white belly; females green above; spotted 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
Velvet-purple Coronet
コロンビア西部とエクアドルの雲霧林の標高1,200〜2,400mに生息する中型のハチドリ（11〜12cm）。雄は緑色の光沢を帯びた暗いビロード状の紫色の羽毛を持つ。チョコ雲霧林の蜜食者。際立った暗色の羽毛を持つハチドリ。
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.