Marvelous Spatuletail vs Rufous-booted Racket-tail
Loddigesia mirabilis 比較対象 Ocreatus addae
Side-by-Side Comparison
| 属性 | Marvelous Spatuletail | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Loddigesia mirabilis | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Near Threatened | Not Evaluated |
| 体長 | — | — |
| 翼開長 | 8.4 cm (3.3 in) | — |
| 体重 | 3.0 g (0.11 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore of northern Peruvian cloud forest. Visits Ericaceae and Alstroemeria flowers; supplements with small arthropods. | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| 一腹卵数 | -- | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Marvelous Spatuletail
Extraordinarily high, thin squeak barely audible; minute twittering notes almost beyond perception, given rarely by male.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Marvelous Spatuletail
Endemic to a small area of the Río Utcubamba valley in Amazonas region, Peru at 2,100–2,900 m. 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
Marvelous Spatuletail
Rufous-booted Racket-tail
How to Tell Them Apart
Marvelous Spatuletail
Emerald-bellied Puffleg: males with iridescent violet gorget; metallic emerald-green above; white belly; females green above; spots
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
Marvelous Spatuletail
One of the world's most extraordinary hummingbirds (10 cm body, males with 15 cm tail rackets). Males have two extremely long outer tail feathers ending in large, iridescent violet-blue discs. Endemic to a tiny area of northern Peru. Critically Endangered. Fewer than 1,000 individuals.
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.