Blue-tufted Starthroat vs Rufous-booted Racket-tail
Heliomaster furcifer 比較対象 Ocreatus addae
Side-by-Side Comparison
| 属性 | Blue-tufted Starthroat | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Heliomaster furcifer | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Not Evaluated |
| 体長 | — | — |
| 翼開長 | 10.8 cm (4.3 in) | — |
| 体重 | 5.7 g (0.20 oz) | 3.0 g (0.11 oz) |
| 食性 | Nectarivore of open Argentine and Bolivian habitats; visits diverse shrub flowers. Catches small insects in … | 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
Blue-tufted Starthroat
Buzzy, insect-like trill with rapid modulation; high-frequency buzz sustained briefly then repeated after pause.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Blue-tufted Starthroat
Found from Bolivia and Brazil south to Argentina and Uruguay in open woodland and scrub. Sea level to 1,500 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
Blue-tufted Starthroat
Rufous-booted Racket-tail
How to Tell Them Apart
Blue-tufted Starthroat
Sparkling-tailed Hummingbird: males with brilliant violet gorget; metallic bronze-green; sparkling tail; 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
Blue-tufted Starthroat
ブラジル南部からアルゼンチン北部にかけての南アメリカ南部の低地・開けた林・草地・農地に生息する中型ハチドリ（体長11〜12 cm）。雄は青紫に輝く喉と叉状の尾を持つ。農地・林縁に適応した蜜食性。
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.