Violet-throated Metaltail vs Rufous-booted Racket-tail
Metallura baroni 比較対象 Ocreatus addae
Side-by-Side Comparison
| 属性 | Violet-throated Metaltail | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Metallura baroni | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Vulnerable | Not Evaluated |
| 体長 | — | — |
| 翼開長 | 11.4 cm (4.5 in) | — |
| 体重 | 4.4 g (0.16 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore of Ecuadorian treeline vegetation; specialized for Ericaceae blooms above 3000 m. Catches 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
Violet-throated Metaltail
Melodic, flute-like phrase with clear quality; smooth notes flowing pleasantly in quiet sequence at forest edge.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Violet-throated Metaltail
Endemic to a tiny area in the Cajas plateau region of southwestern Ecuador. 3,000–4,200 m. Critically endangered.
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
Violet-throated Metaltail
Rufous-booted Racket-tail
How to Tell Them Apart
Violet-throated Metaltail
Green-throated Mountain-gem: males with glittering green gorget; metallic green above; white underparts; females green above; spotted
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-throated Metaltail
エクアドルの限られた高地にのみ生息するビリジアンメタルテイルハチドリ。体長9〜11cm。雄の輝く緑色の羽毛が特徴的。高山の花の蜜を主食とする。絶滅危惧種。
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.