Bronze-tailed Thornbill vs Rufous-booted Racket-tail
Chalcostigma heteropogon 比較対象 Ocreatus addae
Side-by-Side Comparison
| 属性 | Bronze-tailed Thornbill | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Chalcostigma heteropogon | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Not Evaluated |
| 体長 | — | — |
| 翼開長 | 14.1 cm (5.6 in) | — |
| 体重 | 5.65 g (0.20 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore of high Andean grasslands and shrublands; visits Ericaceae and Gentianaceae blooms. Gleans tiny 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
Bronze-tailed Thornbill
Deep, hollow churring with resonant bass; prolonged low buzzing audible at range through open 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
Bronze-tailed Thornbill
Found in high Andean grassland and scrub from Venezuela through Colombia to Ecuador at 2,800–4,200 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
Bronze-tailed Thornbill
Rufous-booted Racket-tail
How to Tell Them Apart
Bronze-tailed Thornbill
Mangrove Hummingbird: tiny; males with violet gorget; metallic green above; white-spotted 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
Bronze-tailed Thornbill
ベネズエラからペルーのアンデス雲霧林・パラモ縁（2,500〜3,800 m）の小型ハチドリ（10〜11 cm）。緑色の羽衣に銅色の尾と紫色の喉（雄）。高高度の花蜜食性。
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.